webdav/sync/react/cockpit-ethernet-ip/node_modules/colord - 志元云盘

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CHANGELOG.md	2025-08-12 16:46:10	3.46 KB
colord.d.ts	2025-08-12 16:46:10	3.27 KB
constants.d.ts	2025-08-12 16:46:10	368 B
extend.d.ts	2025-08-12 16:46:10	217 B
helpers.d.ts	2025-08-12 16:46:10	908 B
index.d.ts	2025-08-12 16:46:10	347 B
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index.mjs	2025-08-12 16:46:10	5.73 KB
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package.json	2025-08-12 16:46:10	5.18 KB
parse.d.ts	2025-08-12 16:46:10	434 B
random.d.ts	2025-08-12 16:46:10	80 B
README.md	2025-08-12 16:46:10	37.48 KB
types.d.ts	2025-08-12 16:46:10	1.98 KB

<div align="center">
 Colord is a tiny yet powerful tool for high-performance color manipulations and conversions.
</div>

## Features

- 📦 **Small**: Just **1.7 KB** gzipped ([3x+ lighter](#benchmarks) than **color** and **tinycolor2**)
- 🚀 **Fast**: [3x+ faster](#benchmarks) than **color** and **tinycolor2**
- 😍 **Simple**: Chainable API and familiar patterns
- 💪 **Immutable**: No need to worry about data mutations
- 🛡 **Bulletproof**: Written in strict TypeScript and has 100% test coverage
- 🗂 **Typed**: Ships with [types included](#types)
- 🏗 **Extendable**: Built-in [plugin system](#plugins) to add new functionality
- 📚 **CSS-compliant**: Strictly follows CSS Color Level specifications
- 👫 **Works everywhere**: Supports all browsers and Node.js
- 💨 **Dependency-free**

## Benchmarks

| Library | Operations/sec | Size (minified) | Size (gzipped) | Dependencies | Type declarations |
| ----------------------------- | ----------------------------- | --------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------- |
| colord 👑 | 3,524,989 | [![](https://badgen.net/bundlephobia/min/colord?color=6ead0a&label=)](https://bundlephobia.com/result?p=colord) | [![](https://badgen.net/bundlephobia/minzip/colord?color=6ead0a&label=)](https://bundlephobia.com/result?p=colord) | [![](https://badgen.net/bundlephobia/dependency-count/colord?color=6ead0a&label=)](https://bundlephobia.com/result?p=colord) | [![](https://badgen.net/npm/types/colord?color=6ead0a&label=)](https://bundlephobia.com/result?p=colord) |
| color | 744,263 | [![](https://badgen.net/bundlephobia/min/color?color=red&label=)](https://bundlephobia.com/result?p=color) | [![](https://badgen.net/bundlephobia/minzip/color?color=red&label=)](https://bundlephobia.com/result?p=color) | [![](https://badgen.net/bundlephobia/dependency-count/color?color=red&label=)](https://bundlephobia.com/result?p=color) | [![](https://badgen.net/npm/types/color?color=e6591d&label=)](https://bundlephobia.com/result?p=color) |
| tinycolor2 | 971,312 | [![](https://badgen.net/bundlephobia/min/tinycolor2?color=red&label=)](https://bundlephobia.com/result?p=tinycolor2) | [![](https://badgen.net/bundlephobia/minzip/tinycolor2?color=red&label=)](https://bundlephobia.com/result?p=tinycolor2) | [![](https://badgen.net/bundlephobia/dependency-count/tinycolor2?color=6ead0a&label=)](https://bundlephobia.com/result?p=tinycolor2) | [![](https://badgen.net/npm/types/tinycolor2?color=e6591d&label=)](https://bundlephobia.com/result?p=tinycolor2) |
| ac-colors | 660,722 | [![](https://badgen.net/bundlephobia/min/ac-colors?color=e6591d&label=)](https://bundlephobia.com/result?p=ac-colors) | [![](https://badgen.net/bundlephobia/minzip/ac-colors?color=e6591d&label=)](https://bundlephobia.com/result?p=ac-colors) | [![](https://badgen.net/bundlephobia/dependency-count/ac-colors?color=6ead0a&label=)](https://bundlephobia.com/result?p=ac-colors) | [![](https://badgen.net/npm/types/ac-colors?color=red&label=)](https://bundlephobia.com/result?p=ac-colors) |
| chroma-js | 962,967 | [![](https://badgen.net/bundlephobia/min/chroma-js?color=red&label=)](https://bundlephobia.com/result?p=chroma-js) | [![](https://badgen.net/bundlephobia/minzip/chroma-js?color=red&label=)](https://bundlephobia.com/result?p=chroma-js) | [![](https://badgen.net/bundlephobia/dependency-count/chroma-js?color=red&label=)](https://bundlephobia.com/result?p=chroma-js) | [![](https://badgen.net/npm/types/chroma-js?color=e6591d&label=)](https://bundlephobia.com/result?p=chroma-js) |

The performance results were generated on a MBP 2019, 2,6 GHz Intel Core i7 by running `npm run benchmark` in the library folder. See [tests/benchmark.ts](https://github.com/omgovich/colord/blob/master/tests/benchmark.ts).

## Getting Started

```
npm i colord
```

```js
import { colord } from "colord";

colord("#ff0000").grayscale().alpha(0.25).toRgbString(); // "rgba(128, 128, 128, 0.25)"
colord("rgb(192, 192, 192)").isLight(); // true
colord("hsl(0, 50%, 50%)").darken(0.25).toHex(); // "#602020"
```

## Supported Color Models

- Hexadecimal strings (including 3, 4 and 8 digit notations)
- RGB strings and objects
- HSL strings and objects
- HSV objects
- Color names ([via plugin](#plugins))
- HWB objects and strings ([via plugin](#plugins))
- CMYK objects and strings ([via plugin](#plugins))
- LCH objects and strings ([via plugin](#plugins))
- LAB objects ([via plugin](#plugins))
- XYZ objects ([via plugin](#plugins))

## API

### Color parsing

<details>
 <summary><code>colord(input)</code></summary>

Parses the given input and creates a new Colord instance. String parsing strictly conforms to [CSS Color Level Specifications](https://www.w3.org/TR/css-color-4/#color-type).

```js
import { colord } from "colord";

// String input examples
colord("#FFF");
colord("#ffffff");
colord("#ffffffff");
colord("rgb(255, 255, 255)");
colord("rgba(255, 255, 255, 0.5)");
colord("rgba(100% 100% 100% / 50%)");
colord("hsl(90, 100%, 100%)");
colord("hsla(90, 100%, 100%, 0.5)");
colord("hsla(90deg 100% 100% / 50%)");
colord("tomato"); // requires "names" plugin

// Object input examples
colord({ r: 255, g: 255, b: 255 });
colord({ r: 255, g: 255, b: 255, a: 1 });
colord({ h: 360, s: 100, l: 100 });
colord({ h: 360, s: 100, l: 100, a: 1 });
colord({ h: 360, s: 100, v: 100 });
colord({ h: 360, s: 100, v: 100, a: 1 });
```

Check out the ["Plugins"](#plugins) section for more input format examples.

</details>

<details>
 <summary><code>getFormat(input)</code></summary>

Returns a color model name for the input passed to the function. Uses the same parsing system as `colord` function.

```js
import { getFormat } from "colord";

getFormat("#aabbcc"); // "hex"
getFormat({ r: 13, g: 237, b: 162, a: 0.5 }); // "rgb"
getFormat("hsl(180deg, 50%, 50%)"); // "hsl"
getFormat("WUT?"); // undefined
```

</details>

### Color conversion

<details>
 <summary><code>.toHex()</code></summary>

Returns the [hexadecimal representation](https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#rgb_colors) of a color. When the alpha channel value of the color is less than 1, it outputs `#rrggbbaa` format instead of `#rrggbb`.

```js
colord("rgb(0, 255, 0)").toHex(); // "#00ff00"
colord({ h: 300, s: 100, l: 50 }).toHex(); // "#ff00ff"
colord({ r: 255, g: 255, b: 255, a: 0 }).toHex(); // "#ffffff00"
```

</details>

<details>
 <summary><code>.toRgb()</code></summary>

```js
colord("#ff0000").toRgb(); // { r: 255, g: 0, b: 0, a: 1 }
colord({ h: 180, s: 100, l: 50, a: 0.5 }).toRgb(); // { r: 0, g: 255, b: 255, a: 0.5 }
```

</details>

<details>
 <summary><code>.toRgbString()</code></summary>

```js
colord("#ff0000").toRgbString(); // "rgb(255, 0, 0)"
colord({ h: 180, s: 100, l: 50, a: 0.5 }).toRgbString(); // "rgba(0, 255, 255, 0.5)"
```

</details>

<details>
 <summary><code>.toHsl()</code></summary>

Converts a color to [HSL color space](https://en.wikipedia.org/wiki/HSL_and_HSV) and returns an object.

```js
colord("#ffff00").toHsl(); // { h: 60, s: 100, l: 50, a: 1 }
colord("rgba(0, 0, 255, 0.5) ").toHsl(); // { h: 240, s: 100, l: 50, a: 0.5 }
```

</details>

<details>
 <summary><code>.toHslString()</code></summary>

Converts a color to [HSL color space](https://en.wikipedia.org/wiki/HSL_and_HSV) and expresses it through the [functional notation](https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#hsl_colors).

```js
colord("#ffff00").toHslString(); // "hsl(60, 100%, 50%)"
colord("rgba(0, 0, 255, 0.5)").toHslString(); // "hsla(240, 100%, 50%, 0.5)"
```

</details>

<details>
 <summary><code>.toHsv()</code></summary>

Converts a color to [HSV color space](https://en.wikipedia.org/wiki/HSL_and_HSV) and returns an object.

```js
colord("#ffff00").toHsv(); // { h: 60, s: 100, v: 100, a: 1 }
colord("rgba(0, 255, 255, 0.5) ").toHsv(); // { h: 180, s: 100, v: 100, a: 1 }
```

</details>

<details>
 <summary><code>.toName(options?)</code> (names plugin)</summary>

Converts a color to a [CSS keyword](https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#color_keywords). Returns `undefined` if the color is not specified in the specs.

```js
import { colord, extend } from "colord";
import namesPlugin from "colord/plugins/names";

extend([namesPlugin]);

colord("#ff6347").toName(); // "tomato"
colord("#00ffff").toName(); // "cyan"
colord("rgba(0, 0, 0, 0)").toName(); // "transparent"

colord("#fe0000").toName(); // undefined (the color is not specified in CSS specs)
colord("#fe0000").toName({ closest: true }); // "red" (closest color available)
```

</details>

<details>
 <summary><code>.toCmyk()</code> (cmyk plugin)</summary>

Converts a color to [CMYK](https://en.wikipedia.org/wiki/CMYK_color_model) color space.

```js
import { colord, extend } from "colord";
import cmykPlugin from "colord/plugins/cmyk";

extend([cmykPlugin]);

colord("#ffffff").toCmyk(); // { c: 0, m: 0, y: 0, k: 0, a: 1 }
colord("#555aaa").toCmyk(); // { c: 50, m: 47, y: 0, k: 33, a: 1 }
```

</details>

<details>
 <summary><code>.toCmykString()</code> (cmyk plugin)</summary>

Converts a color to color space.

Converts a color to [CMYK](https://en.wikipedia.org/wiki/CMYK_color_model) color space and expresses it through the [functional notation](https://www.w3.org/TR/css-color-4/#device-cmyk)

```js
import { colord, extend } from "colord";
import cmykPlugin from "colord/plugins/cmyk";

extend([cmykPlugin]);

colord("#99ffff").toCmykString(); // "device-cmyk(40% 0% 0% 0%)"
colord("#00336680").toCmykString(); // "device-cmyk(100% 50% 0% 60% / 0.5)"
```

</details>

<details>
 <summary><code>.toHwb()</code> (hwb plugin)</summary>

Converts a color to [HWB (Hue-Whiteness-Blackness)](https://en.wikipedia.org/wiki/HWB_color_model) color space.

```js
import { colord, extend } from "colord";
import hwbPlugin from "colord/plugins/hwb";

extend([hwbPlugin]);

colord("#ffffff").toHwb(); // { h: 0, w: 100, b: 0, a: 1 }
colord("#555aaa").toHwb(); // { h: 236, w: 33, b: 33, a: 1 }
```

</details>

<details>
 <summary><code>.toHwbString()</code> (hwb plugin)</summary>

Converts a color to [HWB (Hue-Whiteness-Blackness)](https://en.wikipedia.org/wiki/HWB_color_model) color space and expresses it through the [functional notation](https://www.w3.org/TR/css-color-4/#the-hwb-notation).

```js
import { colord, extend } from "colord";
import hwbPlugin from "colord/plugins/hwb";

extend([hwbPlugin]);

colord("#999966").toHwbString(); // "hwb(60 40% 40%)"
colord("#99ffff").toHwbString(); // "hwb(180 60% 0%)"
colord("#003366").alpha(0.5).toHwbString(); // "hwb(210 0% 60% / 0.5)"
```

</details>

<details>
 <summary><code>.toLab()</code> (lab plugin)</summary>

Converts a color to [CIE LAB](https://en.wikipedia.org/wiki/CIELAB_color_space) color space. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).

```js
import { colord, extend } from "colord";
import labPlugin from "colord/plugins/lab";

extend([labPlugin]);

colord("#ffffff").toLab(); // { l: 100, a: 0, b: 0, alpha: 1 }
colord("#33221180").toLab(); // { l: 14.89, a: 5.77, b: 14.41, alpha: 0.5 }
```

</details>

<details>
 <summary><code>.toLch()</code> (lch plugin)</summary>

Converts a color to [CIE LCH](https://lea.verou.me/2020/04/lch-colors-in-css-what-why-and-how/) color space. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).

```js
import { colord, extend } from "colord";
import lchPlugin from "colord/plugins/lch";

extend([lchPlugin]);

colord("#ffffff").toLch(); // { l: 100, c: 0, h: 0, a: 1 }
colord("#213b0b").toLch(); // { l: 21.85, c: 31.95, h: 127.77, a: 1 }
```

</details>

<details>
 <summary><code>.toLchString()</code> (lch plugin)</summary>

Converts a color to [CIE LCH](https://lea.verou.me/2020/04/lch-colors-in-css-what-why-and-how/) color space and expresses it through the [functional notation](https://www.w3.org/TR/css-color-4/#specifying-lab-lch).

```js
import { colord, extend } from "colord";
import lchPlugin from "colord/plugins/lch";

extend([lchPlugin]);

colord("#ffffff").toLchString(); // "lch(100% 0 0)"
colord("#213b0b").alpha(0.5).toLchString(); // "lch(21.85% 31.95 127.77 / 0.5)"
```

</details>

<details>
 <summary><code>.toXyz()</code> (xyz plugin)</summary>

Converts a color to [CIE XYZ](https://www.sttmedia.com/colormodel-xyz) color space. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).

```js
import { colord, extend } from "colord";
import xyzPlugin from "colord/plugins/xyz";

extend([xyzPlugin]);

colord("#ffffff").toXyz(); // { x: 95.047, y: 100, z: 108.883, a: 1 }
```

</details>

### Color manipulation

<details>
 <summary><code>.alpha(value)</code></summary>

Changes the alpha channel value and returns a new `Colord` instance.

```js
colord("rgb(0, 0, 0)").alpha(0.5).toRgbString(); // "rgba(0, 0, 0, 0.5)"
```

</details>

<details>
 <summary><code>.invert()</code></summary>

Creates a new `Colord` instance containing an inverted (opposite) version of the color.

```js
colord("#ffffff").invert().toHex(); // "#000000"
colord("#aabbcc").invert().toHex(); // "#554433"
```

</details>

<details>
 <summary><code>.saturate(amount = 0.1)</code></summary>

Increases the [HSL saturation](https://en.wikipedia.org/wiki/HSL_and_HSV) of a color by the given amount.

```js
colord("#bf4040").saturate(0.25).toHex(); // "#df2020"
colord("hsl(0, 50%, 50%)").saturate(0.5).toHslString(); // "hsl(0, 100%, 50%)"
```

</details>

<details>
 <summary><code>.desaturate(amount = 0.1)</code></summary>

Decreases the [HSL saturation](https://en.wikipedia.org/wiki/HSL_and_HSV) of a color by the given amount.

```js
colord("#df2020").saturate(0.25).toHex(); // "#bf4040"
colord("hsl(0, 100%, 50%)").saturate(0.5).toHslString(); // "hsl(0, 50%, 50%)"
```

</details>

<details>
 <summary><code>.grayscale()</code></summary>

Makes a gray color with the same lightness as a source color. Same as calling `desaturate(1)`.

```js
colord("#bf4040").grayscale().toHex(); // "#808080"
colord("hsl(0, 100%, 50%)").grayscale().toHslString(); // "hsl(0, 0%, 50%)"
```

</details>

<details>
 <summary><code>.lighten(amount = 0.1)</code></summary>

Increases the [HSL lightness](https://en.wikipedia.org/wiki/HSL_and_HSV) of a color by the given amount.

```js
colord("#000000").lighten(0.5).toHex(); // "#808080"
colord("#223344").lighten(0.3).toHex(); // "#5580aa"
colord("hsl(0, 50%, 50%)").lighten(0.5).toHslString(); // "hsl(0, 50%, 100%)"
```

</details>

<details>
 <summary><code>.darken(amount = 0.1)</code></summary>

Decreases the [HSL lightness](https://en.wikipedia.org/wiki/HSL_and_HSV) of a color by the given amount.

```js
colord("#ffffff").darken(0.5).toHex(); // "#808080"
colord("#5580aa").darken(0.3).toHex(); // "#223344"
colord("hsl(0, 50%, 100%)").lighten(0.5).toHslString(); // "hsl(0, 50%, 50%)"
```

</details>

<details>
 <summary><code>.hue(value)</code></summary>

Changes the hue value and returns a new `Colord` instance.

```js
colord("hsl(90, 50%, 50%)").hue(180).toHslString(); // "hsl(180, 50%, 50%)"
colord("hsl(90, 50%, 50%)").hue(370).toHslString(); // "hsl(10, 50%, 50%)"
```

</details>

<details>
 <summary><code>.rotate(amount = 15)</code></summary>

Increases the [HSL](https://en.wikipedia.org/wiki/HSL_and_HSV) hue value of a color by the given amount.

```js
colord("hsl(90, 50%, 50%)").rotate(90).toHslString(); // "hsl(180, 50%, 50%)"
colord("hsl(90, 50%, 50%)").rotate(-180).toHslString(); // "hsl(270, 50%, 50%)"
```

</details>

<details>
 <summary><code>.mix(color2, ratio = 0.5)</code> (mix plugin)</summary>

Produces a mixture of two colors and returns the result of mixing them (new Colord instance).

In contrast to other libraries that perform RGB values mixing, Colord mixes colors through [LAB color space](https://en.wikipedia.org/wiki/CIELAB_color_space). This approach produces better results and doesn't have the drawbacks the legacy way has.

→ [Online demo](https://3cg7o.csb.app/)

```js
import { colord, extend } from "colord";
import mixPlugin from "colord/plugins/mix";

extend([mixPlugin]);

colord("#ffffff").mix("#000000").toHex(); // "#777777"
colord("#800080").mix("#dda0dd").toHex(); // "#af5cae"
colord("#cd853f").mix("#eee8aa", 0.6).toHex(); // "#e3c07e"
colord("#008080").mix("#808000", 0.35).toHex(); // "#50805d"
```

</details>

<details>
 <summary><code>.tints(count = 5)</code> (mix plugin)</summary>

Provides functionality to generate [tints](https://en.wikipedia.org/wiki/Tints_and_shades) of a color. Returns an array of `Colord` instances, including the original color.

```js
import { colord, extend } from "colord";
import mixPlugin from "colord/plugins/mix";

extend([mixPlugin]);

const color = colord("#ff0000");
color.tints(3).map((c) => c.toHex()); // ["#ff0000", "#ff9f80", "#ffffff"];
```

</details>

<details>
 <summary><code>.shades(count = 5)</code> (mix plugin)</summary>

Provides functionality to generate [shades](https://en.wikipedia.org/wiki/Tints_and_shades) of a color. Returns an array of `Colord` instances, including the original color.

```js
import { colord, extend } from "colord";
import mixPlugin from "colord/plugins/mix";

extend([mixPlugin]);

const color = colord("#ff0000");
color.shades(3).map((c) => c.toHex()); // ["#ff0000", "#7a1b0b", "#000000"];
```

</details>

<details>
 <summary><code>.tones(count = 5)</code> (mix plugin)</summary>

Provides functionality to generate [tones](https://en.wikipedia.org/wiki/Tints_and_shades) of a color. Returns an array of `Colord` instances, including the original color.

```js
import { colord, extend } from "colord";
import mixPlugin from "colord/plugins/mix";

extend([mixPlugin]);

const color = colord("#ff0000");
color.tones(3).map((c) => c.toHex()); // ["#ff0000", "#c86147", "#808080"];
```

</details>

<details>
 <summary><code>.harmonies(type = "complementary")</code> (harmonies plugin)</summary>

Provides functionality to generate [harmony colors](<https://en.wikipedia.org/wiki/Harmony_(color)>). Returns an array of `Colord` instances.

```js
import { colord, extend } from "colord";
import harmoniesPlugin from "colord/plugins/harmonies";

extend([harmoniesPlugin]);

const color = colord("#ff0000");
color.harmonies("analogous").map((c) => c.toHex()); // ["#ff0080", "#ff0000", "#ff8000"]
color.harmonies("complementary").map((c) => c.toHex()); // ["#ff0000", "#00ffff"]
color.harmonies("double-split-complementary").map((c) => c.toHex()); // ["#ff0080", "#ff0000", "#ff8000", "#00ff80", "#0080ff"]
color.harmonies("rectangle").map((c) => c.toHex()); // ["#ff0000", "#ffff00", "#00ffff", "#0000ff"]
color.harmonies("split-complementary").map((c) => c.toHex()); // ["#ff0000", "#00ff80", "#0080ff"]
color.harmonies("tetradic").map((c) => c.toHex()); // ["#ff0000", "#80ff00", "#00ffff", "#8000ff"]
color.harmonies("triadic").map((c) => c.toHex()); // ["#ff0000", "#00ff00", "#0000ff"]
```

</details>

### Color analysis

<details>
 <summary><code>.isValid()</code></summary>

Returns a boolean indicating whether or not an input has been parsed successfully.
Note: If parsing is unsuccessful, Colord defaults to black (does not throws an error).

```js
colord("#ffffff").isValid(); // true
colord("#wwuutt").isValid(); // false
colord("abracadabra").isValid(); // false
colord({ r: 0, g: 0, b: 0 }).isValid(); // true
colord({ r: 0, g: 0, v: 0 }).isValid(); // false
```

</details>

<details>
 <summary><code>.isEqual(color2)</code></summary>

Determines whether two values are the same color.

```js
colord("#000000").isEqual("rgb(0, 0, 0)"); // true
colord("#000000").isEqual("rgb(255, 255, 255)"); // false
```

</details>

<details>
 <summary><code>.alpha()</code></summary>

```js
colord("#ffffff").alpha(); // 1
colord("rgba(50, 100, 150, 0.5)").alpha(); // 0.5
```

</details>

```js
colord("hsl(90, 50%, 50%)").hue(); // 90
colord("hsl(-10, 50%, 50%)").hue(); // 350
```

</details>

<details>
 <summary><code>.brightness()</code></summary>

Returns the brightness of a color (from 0 to 1). The calculation logic is modified from [Web Content Accessibility Guidelines](https://www.w3.org/TR/AERT/#color-contrast).

```js
colord("#000000").brightness(); // 0
colord("#808080").brightness(); // 0.5
colord("#ffffff").brightness(); // 1
```

</details>

<details>
 <summary><code>.isLight()</code></summary>

Same as calling `brightness() >= 0.5`.

```js
colord("#111111").isLight(); // false
colord("#aabbcc").isLight(); // true
colord("#ffffff").isLight(); // true
```

</details>

<details>
 <summary><code>.isDark()</code></summary>

Same as calling `brightness() < 0.5`.

```js
colord("#111111").isDark(); // true
colord("#aabbcc").isDark(); // false
colord("#ffffff").isDark(); // false
```

</details>

<details>
 <summary><code>.luminance()</code> (a11y plugin)</summary>

Returns the relative luminance of a color, normalized to 0 for darkest black and 1 for lightest white as defined by [WCAG 2.0](https://www.w3.org/TR/WCAG20/#relativeluminancedef).

```js
colord("#000000").luminance(); // 0
colord("#808080").luminance(); // 0.22
colord("#ccddee").luminance(); // 0.71
colord("#ffffff").luminance(); // 1
```

</details>

<details>
 <summary><code>.contrast(color2 = "#FFF")</code> (a11y plugin)</summary>

Calculates a contrast ratio for a color pair. This luminance difference is expressed as a ratio ranging from 1 (e.g. white on white) to 21 (e.g., black on a white). [WCAG Accessibility Level AA requires](https://webaim.org/articles/contrast/) a ratio of at least 4.5 for normal text and 3 for large text.

```js
colord("#000000").contrast(); // 21 (black on white)
colord("#ffffff").contrast("#000000"); // 21 (white on black)
colord("#777777").contrast(); // 4.47 (gray on white)
colord("#ff0000").contrast(); // 3.99 (red on white)
colord("#0000ff").contrast("#ff000"); // 2.14 (blue on red)
```

</details>

<details>
 <summary><code>.isReadable(color2 = "#FFF", options?)</code> (a11y plugin)</summary>

Checks that a background and text color pair is readable according to [WCAG 2.0 Contrast and Color Requirements](https://webaim.org/articles/contrast/).

```js
colord("#000000").isReadable(); // true (normal black text on white bg conforms to WCAG AA)
colord("#777777").isReadable(); // false (normal gray text on white bg conforms to WCAG AA)
colord("#ffffff").isReadable("#000000"); // true (normal white text on black bg conforms to WCAG AA)
colord("#e60000").isReadable("#ffff47"); // true (normal red text on yellow bg conforms to WCAG AA)
colord("#e60000").isReadable("#ffff47", { level: "AAA" }); // false (normal red text on yellow bg does not conform to WCAG AAA)
colord("#e60000").isReadable("#ffff47", { level: "AAA", size: "large" }); // true (large red text on yellow bg conforms to WCAG AAA)
```

</details>

<details>
 <summary><code>.delta(color2 = "#FFF")</code> (lab plugin)</summary>

Calculates the perceived color difference between two colors.
The difference calculated according to [Delta E2000](https://en.wikipedia.org/wiki/Color_difference#CIEDE2000).
The return value is `0` if the colors are equal, `1` if they are entirely different.

```js
colord("#3296fa").delta("#197dc8"); // 0.099
colord("#faf0c8").delta("#ffffff"); // 0.148
colord("#afafaf").delta("#b4b4b4"); // 0.014
colord("#000000").delta("#ffffff"); // 1
```

</details>

### Color utilities

<details>
 <summary><code>random()</code></summary>

Returns a new Colord instance with a random color value inside.

```js
import { random } from "colord";

random().toHex(); // "#01c8ec"
random().alpha(0.5).toRgb(); // { r: 13, g: 237, b: 162, a: 0.5 }
```

</details>

<details>
 <summary><code>.minify(options?)</code></summary>

Converts a color to its shortest string representation.

```js
import { colord, extend } from "colord";
import minifyPlugin from "colord/plugins/minify";

extend([minifyPlugin]);

colord("black").minify(); // "#000"
colord("#112233").minify(); // "#123"
colord("darkgray").minify(); // "#a9a9a9"
colord("rgba(170,170,170,0.4)").minify(); // "hsla(0,0%,67%,.4)"
colord("rgba(170,170,170,0.4)").minify({ alphaHex: true }); // "#aaa6"
```

| Option        | Default | Description                                                  |
| ------------- | ------- | ------------------------------------------------------------ |
| `hex`         | `true`  | Enable `#rrggbb` and `#rgb` notations                        |
| `alphaHex`    | `false` | Enable `#rrggbbaa` and `#rgba` notations                     |
| `rgb`         | `true`  | Enable `rgb()` and `rgba()` functional notations             |
| `hsl`         | `true`  | Enable `hsl()` and `hsla()` functional notations             |
| `name`        | `false` | Enable CSS color keywords. Requires `names` plugin installed |
| `transparent` | `false` | Enable `"transparent"` color keyword                         |

</details>

## Plugins

**Colord** has a built-in plugin system that allows new features and functionality to be easily added.

<details>
 <summary><code>a11y</code> (Accessibility) 0.38 KB</summary>

Adds accessibility and color contrast utilities working according to [Web Content Accessibility Guidelines 2.0](https://www.w3.org/TR/WCAG20/).

```js
import { colord, extend } from "colord";
import a11yPlugin from "colord/plugins/a11y";

extend([a11yPlugin]);

colord("#000000").luminance(); // 0
colord("#ccddee").luminance(); // 0.71
colord("#ffffff").luminance(); // 1

colord("#000000").contrast(); // 21 (black on white)
colord("#ffffff").contrast("#000000"); // 21 (white on black)
colord("#0000ff").contrast("#ff000"); // 2.14 (blue on red)

colord("#000000").isReadable(); // true (black on white)
colord("#ffffff").isReadable("#000000"); // true (white on black)
colord("#777777").isReadable(); // false (gray on white)
colord("#e60000").isReadable("#ffff47"); // true (normal red text on yellow bg conforms to WCAG AA)
colord("#e60000").isReadable("#ffff47", { level: "AAA" }); // false (normal red text on yellow bg does not conform to WCAG AAA)
colord("#e60000").isReadable("#ffff47", { level: "AAA", size: "large" }); // true (large red text on yellow bg conforms to WCAG AAA)
```

</details>

<details>
 <summary><code>cmyk</code> (CMYK color space) 0.6 KB</summary>

Adds support of [CMYK](https://www.sttmedia.com/colormodel-cmyk) color model.

```js
import { colord, extend } from "colord";
import cmykPlugin from "colord/plugins/cmyk";

extend([cmykPlugin]);

colord("#ffffff").toCmyk(); // { c: 0, m: 0, y: 0, k: 0, a: 1 }
colord("#999966").toCmykString(); // "device-cmyk(0% 0% 33% 40%)"
colord({ c: 0, m: 0, y: 0, k: 100, a: 1 }).toHex(); // "#000000"
colord("device-cmyk(0% 61% 72% 0% / 50%)").toHex(); // "#ff634780"
```

</details>

<details>
 <summary><code>harmonies</code> (Color harmonies) 0.15 KB</summary>

Provides functionality to generate [harmony colors](<https://en.wikipedia.org/wiki/Harmony_(color)>).

```js
import { colord, extend } from "colord";
import harmonies from "colord/plugins/harmonies";

extend([harmonies]);

</details>

<details>
 <summary><code>hwb</code> (HWB color model) 0.8 KB</summary>

Adds support of [Hue-Whiteness-Blackness](https://en.wikipedia.org/wiki/HWB_color_model) color model.

```js
import { colord, extend } from "colord";
import hwbPlugin from "colord/plugins/hwb";

extend([hwbPlugin]);

colord("#999966").toHwb(); // { h: 60, w: 40, b: 40, a: 1 }
colord("#003366").toHwbString(); // "hwb(210 0% 60%)"

colord({ h: 60, w: 40, b: 40 }).toHex(); // "#999966"
colord("hwb(210 0% 60% / 50%)").toHex(); // "#00336680"
```

</details>

<details>
 <summary><code>lab</code> (CIE LAB color space) 1.4 KB</summary>

Adds support of [CIE LAB](https://en.wikipedia.org/wiki/CIELAB_color_space) color model. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).

Also plugin provides `.delta` method for [perceived color difference calculations](https://en.wikipedia.org/wiki/Color_difference#CIEDE2000).

```js
import { colord, extend } from "colord";
import labPlugin from "colord/plugins/lab";

extend([labPlugin]);

colord({ l: 53.24, a: 80.09, b: 67.2 }).toHex(); // "#ff0000"
colord("#ffffff").toLab(); // { l: 100, a: 0, b: 0, alpha: 1 }

colord("#afafaf").delta("#b4b4b4"); // 0.014
colord("#000000").delta("#ffffff"); // 1
```

</details>

<details>
 <summary><code>lch</code> (CIE LCH color space) 1.3 KB</summary>

Adds support of [CIE LCH](https://lea.verou.me/2020/04/lch-colors-in-css-what-why-and-how/) color space. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).

```js
import { colord, extend } from "colord";
import lchPlugin from "colord/plugins/lch";

extend([lchPlugin]);

colord({ l: 100, c: 0, h: 0 }).toHex(); // "#ffffff"
colord("lch(48.25% 30.07 196.38)").toHex(); // "#008080"

colord("#646464").toLch(); // { l: 42.37, c: 0, h: 0, a: 1 }
colord("#646464").alpha(0.5).toLchString(); // "lch(42.37% 0 0 / 0.5)"
```

</details>

<details>
 <summary><code>minify</code> (Color string minification) 0.5 KB</summary>

A plugin adding color string minification utilities.

```js
import { colord, extend } from "colord";
import minifyPlugin from "colord/plugins/minify";

extend([minifyPlugin]);

</details>

<details>
 <summary><code>mix</code> (Color mixing) 0.96 KB</summary>

A plugin adding color mixing utilities.

→ [Online demo](https://3cg7o.csb.app/)

```js
import { colord, extend } from "colord";
import mixPlugin from "colord/plugins/mix";

extend([mixPlugin]);

Also, the plugin provides special mixtures such as [tints, shades, and tones](https://en.wikipedia.org/wiki/Tints_and_shades):

```js
const color = colord("#ff0000");
color.tints(3).map((c) => c.toHex()); // ["#ff0000", "#ff9f80", "#ffffff"];
color.shades(3).map((c) => c.toHex()); // ["#ff0000", "#7a1b0b", "#000000"];
color.tones(3).map((c) => c.toHex()); // ["#ff0000", "#c86147", "#808080"];
```

</details>

<details>
 <summary><code>names</code> (CSS color keywords) 1.45 KB</summary>

Provides options to convert a color into a [CSS color keyword](https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#color_keywords) and vice versa.

```js
import { colord, extend } from "colord";
import namesPlugin from "colord/plugins/names";

extend([namesPlugin]);

colord("tomato").toHex(); // "#ff6347"
colord("#00ffff").toName(); // "cyan"
colord("rgba(0, 0, 0, 0)").toName(); // "transparent"
colord("#fe0000").toName(); // undefined (the color is not specified in CSS specs)
colord("#fe0000").toName({ closest: true }); // "red" (closest color)
```

</details>

<details>
 <summary><code>xyz</code> (CIE XYZ color space) 0.7 KB</summary>

Adds support of [CIE XYZ](https://www.sttmedia.com/colormodel-xyz) color model. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).

```js
import { colord, extend } from "colord";
import xyzPlugin from "colord/plugins/xyz";

extend([xyzPlugin]);

colord("#ffffff").toXyz(); // { x: 95.047, y: 100, z: 108.883, a: 1 }
colord({ x: 0, y: 0, z: 0 }).toHex(); // "#000000"
```

</details>

## Types

**Colord** is written in strict TypeScript and ships with types in the library itself — no need for any other install. We provide everything you need in one tiny package.

While not only typing its own functions and variables, **Colord** can also help you type yours. Depending on the color space you are using, you can also import and use the type that is associated with it.

```ts
import { RgbColor, RgbaColor, HslColor, HslaColor, HsvColor, HsvaColor } from "colord";

const foo: HslColor = { h: 0, s: 0, l: 0 };
const bar: RgbColor = { r: 0, g: 0, v: 0 }; // ERROR
```

## Projects using Colord

- [cssnano](https://github.com/cssnano/cssnano) — the most popular CSS minification tool
- [Resume.io](https://resume.io/) — online resume builder with over 12,000,000 users worldwide
- [Leva](https://github.com/pmndrs/leva) — open source extensible GUI panel made for React
- [Qui Max](https://github.com/Qvant-lab/qui-max) — Vue.js design system and component library
- and [thousands more](https://github.com/omgovich/colord/network/dependents)...

## Roadmap

- [x] Parse and convert Hex, RGB(A), HSL(A), HSV(A)
- [x] Saturate, desaturate, grayscale
- [x] Trim an input value
- [x] Clamp input numbers to resolve edge cases (e.g. `rgb(256, -1, 999, 2)`)
- [x] `brightness`, `isDark`, `isLight`
- [x] Set and get `alpha`
- [x] Plugin API
- [x] 4 and 8 digit Hex
- [x] `lighten`, `darken`
- [x] `invert`
- [x] CSS color names (via plugin)
- [x] A11y and contrast utils (via plugin)
- [x] XYZ color space (via plugin)
- [x] [HWB](https://drafts.csswg.org/css-color/#the-hwb-notation) color space (via plugin)
- [x] [LAB](https://www.w3.org/TR/css-color-4/#resolving-lab-lch-values) color space (via plugin)
- [x] [LCH](https://lea.verou.me/2020/04/lch-colors-in-css-what-why-and-how/) color space (via plugin)
- [x] Mix colors (via plugin)
- [x] CMYK color space (via plugin)

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