tinycolor


> TinyColor is a small library for color manipulation and conversion

A fork of tinycolor2 by Brian Grinstead

__DEMO__: https://tinycolor.vercel.app

$3

* reformatted into TypeScript / es2015 and requires node >= 8
* tree shakeable "module" export and no package sideEffects
* tinycolor is now exported as a class called TinyColor
* default export removed, use import { TinyColor } from '@ctrl/tinycolor'
* new random, an implementation of randomColor by David Merfield that returns a TinyColor object
* several functions moved out of the tinycolor class and are no longer TinyColor.
* readability, fromRatio moved out
* random moved out and renamed to legacyRandom
* toFilter has been moved out and renamed to toMsFilter
* mix, equals use the current TinyColor object as the first parameter
* added polyad colors tinycolor PR 126
* color wheel values (360) are allowed to over or under-spin and still return valid colors tinycolor PR 108
* added tint() and shade() tinycolor PR 159
* isValid, format are now propertys instead of a function

Install

``sh
npm install @ctrl/tinycolor
`

Use

`ts
import { TinyColor } from '@ctrl/tinycolor';
const color = new TinyColor('red').toHexString(); // '#ff0000'
`

Accepted String Input

The string parsing is very permissive. It is meant to make typing a color as input as easy as possible. All commas, percentages, parenthesis are optional, and most input allow either 0-1, 0%-100%, or 0-n (where n is either 100, 255, or 360 depending on the value).

HSL and HSV both require either 0%-100% or 0-1 for the S/L/V properties. The H (hue) can have values between 0%-100% or 0-360.

RGB input requires either 0-255 or 0%-100%.

If you call tinycolor.fromRatio, RGB and Hue input can also accept 0-1.

Here are some examples of string input:

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`ts
new TinyColor('#000');
new TinyColor('000');
new TinyColor('#369C');
new TinyColor('369C');
new TinyColor('#f0f0f6');
new TinyColor('f0f0f6');
new TinyColor('#f0f0f688');
new TinyColor('f0f0f688');
`

$3

`ts
new TinyColor('rgb (255, 0, 0)');
new TinyColor('rgb 255 0 0');
new TinyColor('rgba (255, 0, 0, .5)');
new TinyColor({ r: 255, g: 0, b: 0 });

import { fromRatio } from '@ctrl/tinycolor';
fromRatio({ r: 1, g: 0, b: 0 });
fromRatio({ r: 0.5, g: 0.5, b: 0.5 });
`

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`ts
new TinyColor('hsl(0, 100%, 50%)');
new TinyColor('hsla(0, 100%, 50%, .5)');
new TinyColor('hsl(0, 100%, 50%)');
new TinyColor('hsl 0 1.0 0.5');
new TinyColor({ h: 0, s: 1, l: 0.5 });
`

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`ts
new TinyColor('hsv(0, 100%, 100%)');
new TinyColor('hsva(0, 100%, 100%, .5)');
new TinyColor('hsv (0 100% 100%)');
new TinyColor('hsv 0 1 1');
new TinyColor({ h: 0, s: 100, v: 100 });
`

$3

`ts
new TinyColor('cmyk(0, 25, 20, 0)');
new TinyColor('cmyk(0, 100, 100, 0)');
new TinyColor('cmyk 100 0 100 0)');
new TinyColor({c: 0, m: 25, y: 25, k: 0});
`

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`ts
new TinyColor('RED');
new TinyColor('blanchedalmond');
new TinyColor('darkblue');
`

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`ts
new TinyColor(0x0);
new TinyColor(0xaabbcc);
`

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If you are calling this from code, you may want to use object input. Here are some examples of the different types of accepted object inputs:

`ts
{ r: 255, g: 0, b: 0 }
{ r: 255, g: 0, b: 0, a: .5 }
{ h: 0, s: 100, l: 50 }
{ h: 0, s: 100, v: 100 }
`

Properties

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The original input passed into the constructer used to create the tinycolor instance

`ts
const color = new TinyColor('red');
color.originalInput; // "red"
color = new TinyColor({ r: 255, g: 255, b: 255 });
color.originalInput; // "{r: 255, g: 255, b: 255}"
`

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Returns the format used to create the tinycolor instance

`ts
const color = new TinyColor('red');
color.format; // "name"
color = new TinyColor({ r: 255, g: 255, b: 255 });
color.format; // "rgb"
`

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A boolean indicating whether the color was successfully parsed. Note: if the color is not valid then it will act like black when being used with other methods.

`ts
const color1 = new TinyColor('red');
color1.isValid; // true
color1.toHexString(); // "#ff0000"

const color2 = new TinyColor('not a color');
color2.isValid; // false
color2.toString(); // "#000000"
`

Methods

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Returns the perceived brightness of a color, from 0-255, as defined by Web Content Accessibility Guidelines (Version 1.0).

`ts
const color1 = new TinyColor('#fff');
color1.getBrightness(); // 255

const color2 = new TinyColor('#000');
color2.getBrightness(); // 0
`

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Return a boolean indicating whether the color's perceived brightness is light.

`ts
const color1 = new TinyColor('#fff');
color1.isLight(); // true

const color2 = new TinyColor('#000');
color2.isLight(); // false
`

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Return a boolean indicating whether the color's perceived brightness is dark.

`ts
const color1 = new TinyColor('#fff');
color1.isDark(); // false

const color2 = new TinyColor('#000');
color2.isDark(); // true
`

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Returns the perceived luminance of a color, from 0-1 as defined by Web Content Accessibility Guidelines (Version 2.0).

`ts
const color1 = new TinyColor('#fff');
color1.getLuminance(); // 1

const color2 = new TinyColor('#000');
color2.getLuminance(); // 0
`

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Returns the alpha value of a color, from 0-1.

`ts
const color1 = new TinyColor('rgba(255, 0, 0, .5)');
color1.getAlpha(); // 0.5

const color2 = new TinyColor('rgb(255, 0, 0)');
color2.getAlpha(); // 1

const color3 = new TinyColor('transparent');
color3.getAlpha(); // 0
`

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Sets the alpha value on a current color. Accepted range is in between 0-1.

`ts
const color = new TinyColor('red');
color.getAlpha(); // 1
color.setAlpha(0.5);
color.getAlpha(); // .5
color.toRgbString(); // "rgba(255, 0, 0, .5)"
`

$3

Compute how the color would appear on a background. When the color is fully transparent (i.e. getAlpha() == 0), the result will be the background color. When the color is not transparent at all (i.e. getAlpha() == 1), the result will be the color itself. Otherwise you will get a computed result.

`ts
const color = new TinyColor('rgba(255, 0, 0, .5)');
const computedColor = color.onBackground('rgb(0, 0, 255)');
computedColor.toRgbString(); // "rgb(128, 0, 128)"
`

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The following methods will return a property for the alpha value, which can be ignored: toHsv, toHsl, toRgb

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`ts
const color = new TinyColor('red');
color.toHsv(); // { h: 0, s: 1, v: 1, a: 1 }
`

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`ts
const color = new TinyColor('red');
color.toHsvString(); // "hsv(0, 100%, 100%)"
color.setAlpha(0.5);
color.toHsvString(); // "hsva(0, 100%, 100%, 0.5)"
`

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`ts
const color = new TinyColor('red');
color.toHsl(); // { h: 0, s: 1, l: 0.5, a: 1 }
`

$3

`ts
const color = new TinyColor('red');
color.toHslString(); // "hsl(0, 100%, 50%)"
color.setAlpha(0.5);
color.toHslString(); // "hsla(0, 100%, 50%, 0.5)"
`

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`ts
const color = new TinyColor('red');
color.toCmykString(); // "cmyk(0, 100, 100, 0)"
`

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`ts
new TinyColor('#aabbcc').toNumber() === 0xaabbcc // true
new TinyColor('rgb(1, 1, 1)').toNumber() === (1 << 16) + (1 << 8) + 1 // true
`

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`ts
const color = new TinyColor('red');
color.toHex(); // "ff0000"
`

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`ts
const color = new TinyColor('red');
color.toHexString(); // "#ff0000"
`

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`ts
const color = new TinyColor('red');
color.toHex8(); // "ff0000ff"
`

$3

`ts
const color = new TinyColor('red');
color.toHex8String(); // "#ff0000ff"
`

$3

`ts
const color1 = new TinyColor('#ff000000');
color1.toHexShortString(); // "#ff000000"
color1.toHexShortString(true); // "#f000"

const color2 = new TinyColor('#ff0000ff');
color2.toHexShortString(); // "#ff0000"
color2.toHexShortString(true); // "#f00"
`

$3

`ts
const color = new TinyColor('red');
color.toRgb(); // { r: 255, g: 0, b: 0, a: 1 }
`

$3

`ts
const color = new TinyColor('red');
color.toRgbString(); // "rgb(255, 0, 0)"
color.setAlpha(0.5);
color.toRgbString(); // "rgba(255, 0, 0, 0.5)"
`

$3

`ts
const color = new TinyColor('red');
color.toPercentageRgb(); // { r: "100%", g: "0%", b: "0%", a: 1 }
`

$3

`ts
const color = new TinyColor('red');
color.toPercentageRgbString(); // "rgb(100%, 0%, 0%)"
color.setAlpha(0.5);
color.toPercentageRgbString(); // "rgba(100%, 0%, 0%, 0.5)"
`

$3

`ts
const color = new TinyColor('red');
color.toName(); // "red"
`

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`ts
import { toMsFilter } from '@ctrl/tinycolor';
toMsFilter('red', 'blue'); // 'progid:DXImageTransform.Microsoft.gradient(startColorstr=#ffff0000,endColorstr=#ff0000ff)'
`

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Print to a string, depending on the input format. You can also override this by passing one of "rgb", "prgb", "hex6", "hex3", "hex8", "name", "hsl", "hsv" into the function.

`ts
const color1 = new TinyColor('red');
color1.toString(); // "red"
color1.toString('hsv'); // "hsv(0, 100%, 100%)"

const color2 = new TinyColor('rgb(255, 0, 0)');
color2.toString(); // "rgb(255, 0, 0)"
color2.setAlpha(0.5);
color2.toString(); // "rgba(255, 0, 0, 0.5)"
`

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These methods manipulate the current color, and return it for chaining. For instance:

`ts
new TinyColor('red')
.lighten()
.desaturate()
.toHexString(); // '#f53d3d'
`

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lighten: function(amount = 10) -> TinyColor. Lighten the color a given amount, from 0 to 100. Providing 100 will always return white.

`ts
new TinyColor('#f00').lighten().toString(); // '#ff3333'
new TinyColor('#f00').lighten(100).toString(); // '#ffffff'
`

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brighten: function(amount = 10) -> TinyColor. Brighten the color a given amount, from 0 to 100.

`ts
new TinyColor('#f00').brighten().toString(); // '#ff1919'
`

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darken: function(amount = 10) -> TinyColor. Darken the color a given amount, from 0 to 100. Providing 100 will always return black.

`ts
new TinyColor('#f00').darken().toString(); // '#cc0000'
new TinyColor('#f00').darken(100).toString(); // '#000000'
`

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Mix the color with pure white, from 0 to 100. Providing 0 will do nothing, providing 100 will always return white.

`ts
new TinyColor('#f00').tint().toString(); // "#ff1a1a"
new TinyColor('#f00').tint(100).toString(); // "#ffffff"
`

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Mix the color with pure black, from 0 to 100. Providing 0 will do nothing, providing 100 will always return black.

`ts
new TinyColor('#f00').shade().toString(); // "#e60000"
new TinyColor('#f00').shade(100).toString(); // "#000000"
`

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desaturate: function(amount = 10) -> TinyColor. Desaturate the color a given amount, from 0 to 100. Providing 100 will is the same as calling greyscale.

`ts
new TinyColor('#f00').desaturate().toString(); // "#f20d0d"
new TinyColor('#f00').desaturate(100).toString(); // "#808080"
`

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saturate: function(amount = 10) -> TinyColor. Saturate the color a given amount, from 0 to 100.

`ts
new TinyColor('hsl(0, 10%, 50%)').saturate().toString(); // "hsl(0, 20%, 50%)"
`

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greyscale: function() -> TinyColor. Completely desaturates a color into greyscale. Same as calling desaturate(100).

`ts
new TinyColor('#f00').greyscale().toString(); // "#808080"
`

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spin: function(amount = 0) -> TinyColor. Spin the hue a given amount, from -360 to 360. Calling with 0, 360, or -360 will do nothing (since it sets the hue back to what it was before).

`ts
new TinyColor('#f00').spin(180).toString(); // "#00ffff"
new TinyColor('#f00').spin(-90).toString(); // "#7f00ff"
new TinyColor('#f00').spin(90).toString(); // "#80ff00"

// spin(0) and spin(360) do nothing
new TinyColor('#f00').spin(0).toString(); // "#ff0000"
new TinyColor('#f00').spin(360).toString(); // "#ff0000"
`

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mix: function(amount = 50) => TinyColor. Mix the current color a given amount with another color, from 0 to 100. 0 means no mixing (return current color).

`ts
let color1 = new TinyColor('#f0f');
let color2 = new TinyColor('#0f0');

color1.mix(color2).toHexString(); // #808080
`

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Combination functions return an array of TinyColor objects unless otherwise noted.

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analogous: function(results = 6, slices = 30) -> array.

`ts
const colors = new TinyColor('#f00').analogous();
colors.map(t => t.toHexString()); // [ "#ff0000", "#ff0066", "#ff0033", "#ff0000", "#ff3300", "#ff6600" ]
`

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monochromatic: function(, results = 6) -> array.

`ts
const colors = new TinyColor('#f00').monochromatic();
colors.map(t => t.toHexString()); // [ "#ff0000", "#2a0000", "#550000", "#800000", "#aa0000", "#d40000" ]
`

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splitcomplement: function() -> array.

`ts
const colors = new TinyColor('#f00').splitcomplement();
colors.map(t => t.toHexString()); // [ "#ff0000", "#ccff00", "#0066ff" ]
`

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triad: function() -> array. Alias for polyad(3).

`ts
const colors = new TinyColor('#f00').triad();
colors.map(t => t.toHexString()); // [ "#ff0000", "#00ff00", "#0000ff" ]
`

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tetrad: function() -> array. Alias for polyad(4).

`ts
const colors = new TinyColor('#f00').tetrad();
colors.map(t => t.toHexString()); // [ "#ff0000", "#80ff00", "#00ffff", "#7f00ff" ]
`

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polyad: function(number) -> array.

`ts
const colors = new TinyColor('#f00').polyad(4);
colors.map(t => t.toHexString()); // [ "#ff0000", "#80ff00", "#00ffff", "#7f00ff" ]
`

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complement: function() -> TinyColor.

`ts
new TinyColor('#f00').complement().toHexString(); // "#00ffff"
`

Color Utilities

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`ts
let color1 = new TinyColor('red');
let color2 = new TinyColor('#f00');

color1.equals(color2); // true
`

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Returns a random TinyColor object. This is an implementation of randomColor by David Merfield.
The difference input parsing and output formatting are handled by TinyColor.

You can pass an options object to influence the type of color it produces. The options object accepts the following properties:

* hue – Controls the hue of the generated color. You can pass a string representing a color name: red, orange, yellow, green, blue, purple, pink and monochrome are currently supported. If you pass a hexidecimal color string such as #00FFFF, its hue value will be extracted and used to generate colors.
* luminosity – Controls the luminosity of the generated color. You can specify a string containing bright, light or dark.
* count – An integer which specifies the number of colors to generate.
* seed – An integer which when passed will cause randomColor to return the same color each time.
* alpha – A decimal between 0 and 1. Only relevant when using a format with an alpha channel (rgba and hsla). Defaults to a random value.

`ts
import { random } from '@ctrl/tinycolor';
// Returns a TinyColor for an attractive color
random();

// Returns an array of ten green colors
random({
count: 10,
hue: 'green',
});

// Returns a TinyColor object in a light blue
random({
luminosity: 'light',
hue: 'blue',
});

// Returns a TinyColor object in a 'truly random' color
random({
luminosity: 'random',
hue: 'random',
});

// Returns a dark RGB color with specified alpha
random({
luminosity: 'dark',
alpha: 0.5,
});
`

$3

TinyColor assesses readability based on the Web Content Accessibility Guidelines (Version 2.0).

#### readability

readability: function(TinyColor, TinyColor) -> number.
Returns the contrast ratio between two colors.

`ts
import { readability } from '@ctrl/tinycolor';
readability('#000', '#000'); // 1
readability('#000', '#111'); // 1.1121078324840545
readability('#000', '#fff'); // 21
`

Use the values in your own calculations, or use one of the convenience functions below.

#### isReadable

isReadable: function(TinyColor, TinyColor, Object) -> Boolean. Ensure that foreground and background color combinations meet WCAG guidelines. Object is optional, defaulting to {level: "AA",size: "small"}. level can be "AA" or "AAA" and size can be "small" or "large".

Here are links to read more about the AA and AAA requirements.

`ts
import { isReadable } from '@ctrl/tinycolor';
isReadable("#000", "#111"); // false
isReadable("#ff0088", "#5c1a72", { level: "AA", size: "small" }); // false
isReadable("#ff0088", "#5c1a72", { level: "AA", size: "large" }), // true
`

#### mostReadable

mostReadable: function(TinyColor, [TinyColor, TinyColor ...], Object) -> Boolean.
Given a base color and a list of possible foreground or background colors for that base, returns the most readable color.
If none of the colors in the list is readable, mostReadable will return the better of black or white if includeFallbackColors:true.

`ts
import { mostReadable } from '@ctrl/tinycolor';
mostReadable('#000', ['#f00', '#0f0', '#00f']).toHexString(); // "#00ff00"
mostReadable('#123', ['#124', '#125'], { includeFallbackColors: false }).toHexString(); // "#112255"
mostReadable('#123', ['#124', '#125'], { includeFallbackColors: true }).toHexString(); // "#ffffff"
mostReadable('#ff0088', ['#2e0c3a'], {
includeFallbackColors: true,
level: 'AAA',
size: 'large',
}).toHexString(); // "#2e0c3a",
mostReadable('#ff0088', ['#2e0c3a'], {
includeFallbackColors: true,
level: 'AAA',
size: 'small',
}).toHexString(); // "#000000",
`


See index.html in the project for a demo.

Common operations

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clone: function() -> TinyColor.
Instantiate a new TinyColor object with the same color. Any changes to the new one won't affect the old one.

`ts
const color1 = new TinyColor('#F00');
const color2 = color1.clone();
color2.setAlpha(0.5);

color1.toString(); // "#ff0000"
color2.toString(); // "rgba(255, 0, 0, 0.5)"
``