color-changer
v1.0.1
Published
A zero-dependancy, light-weight color modification library to convert between color types and modify color attributes for javascript.
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color-changer
A zero-dependancy, light-weight color modification library to convert between color types and modify color attributes for javascript. This tool can take in a css color string or an object and convert it between several different color specifications including hex
, rgb
, hsl
, and hsv
.
import Color from 'color-changer';
let color = new Color('#8cc864');
console.log(color.rgb) // rgb {r: 140, g: 200, b: 100}
console.log(color.hsl.string()); // hsl(96, 48%, 59%)
Install
$ npm install color-changer
Import
import Color from 'color-changer';
Instantiate
All percentage values may be represented as a decimal value 0.67 or as a percentage string '67%'.
// Empty Color Object
let color = new Color();
RGB
// String
let color = new Color('rgb(143, 188, 143)');
/* -- or -- */
let color = new Color('rgba(143, 188, 143, 0.67));
// Object
let color = new Color({r: 143, g: 188, b: 143});
/* -- or -- */
let color = new Color({r: 143, g: 188, b: 143, a: 0.67});
HEX
// String
let color = new Color('#8fbc8f');
/* -- or -- */
let color = new Color('#8fbc8fab');
// Object
let color = new Color({value: 8fbc8f});
/* -- or -- */
let color = new Color({value: 8fbc8f, a: 0.67});
HSL
// String
let color = new Color('hsl(120, 25%, 65%)');
/* -- or -- */
let color = new Color('hsla(120, 25%, 65%, 0.67));
// Object
let color = new Color({h: 120, s: '25%', l: '65%'});
/* -- or -- */
let color = new Color({h: 120, s: '25%', l: '65%', a: 0.67});
HSV
// String
let color = new Color('hsv(120, 25%, 65%)');
/* -- or -- */
let color = new Color('hsva(120, 25%, 65%, 0.67));
// Object
let color = new Color({h: 120, s: '25%', v: '65%'});
/* -- or -- */
let color = new Color({h: 120, s: '25%', v: '65%', a: 0.67});
NAME
// String
let color = new Color('DarkSeaGreen');
// Object
let color = new Color({name: 'DarkSeaGreen', a: 0.67})
Usage
import Color from 'color-changer';
// Instantiate Empty Color Object
let color = new Color();
// Instatiate Color Object w/ color
let color = new Color('#3F589F');
Setters
Set the color by color specification using the following setters. CSS strings, arrays, and objects are allowed using the following format.
/* RGB */
color.setRGB('rgb(143, 188, 143)');
color.setRGB('rgba(143, 188, 143, 0.67)')
color.setRGB([143, 188, 143]);
color.setRGB([143, 188, 143, 0.67]);
color.setRGB({r: 143, g: 188, b: 143});
color.setRGB({r: 143, g: 188, b: 143, a: 0.67});
/* HEX */
color.setHEX('#8fbc8f');
color.setHEX('#8fbc8fab');
color.setHEX(['#8fbc8f']);
color.setHEX(['#8fbc8f', 0.67]);
color.setHEX({value: '#8fbc8f'});
color.setHEX({value: '#8fbc8f', a: 0.67});
/* HSL */
color.setHSL('hsl(120, 25%, 65%)');
color.setHSL('hsla(120, 25%, 65%, 0.67)');
color.setHSL([120, '25%', '65%']);
color.setHSL([120, '25%', '65%', 0.67]);
color.setHSL({h: 120, s: '25%', l: '65%'});
color.setHSL({h: 120, s: '25%', l: '65%', a: 0.67});
/* HSV */
color.setHSV('hsv(120, 25%, 65%)');
color.setHSV('hsva(120, 25%, 65%, 0.67)');
color.setHSV([120, '25%', '65%']);
color.setHSV([120, '25%', '65%', 0.67]);
color.setHSV({h: 120, s: '25%', v: '65%'});
color.setHSV({h: 120, s: '25%', v: '65%', a: 0.67});
/* NAME */
color.setNAME('DarkSeaGreen');
color.setNAME(['DarkSeaGreen']);
color.setNAME(['DarkSeaGreen', 0.67]);
color.setNAME({name: 'DarkSeaGreen'});
color.setNAME({name: 'DarkSeaGreen', a: 0.67});
Getters
Get the specific color object or all of the color elements.
/* Colors */
let rgb = color.rgb;
let hex = color.hex;
let hsl = color.hsl;
let hsv = color.hsv;
/* Elements */
let elements = color.elements;
CSS Strings
Each color object can be returned as a string with rounded values.
let color = new Color();
color.setHEX('#8fbc8f');
console.log(color.hsl.string()) // hsl(120, 25%, 65%)
console.log(color.hsv.string()) // hsv(120, 24%, 74%)
console.log(color.rgb.string()) // rgb(143, 188, 143)
console.log(color.hex.string()) // #8fbc8f
color.alpha(0.77);
console.log(color.hsl.string()) // hsla(120, 25%, 65%, 0.77)
console.log(color.hsv.string()) // hsva(120, 24%, 74%, 0.77)
console.log(color.rgb.string()) // rgba(143, 188, 143, 0.77)
console.log(color.hex.string()) // #8fbc8fc4
Luminance
Get the relative luminance of the color based on the WCAG Relative Luminance definition.
let color = new Color();
color.setHEX('#8fbc8f');
/* (Black) 0 <-> 1 (White) */
console.log(color.luminance()); // 0.43789249325969065
Contrast Ratio
Get the contrast ratio of two colors base on the WCAG Contrast Ratio definition.
let color = new Color();
color.setHEX('#8fbc8f');
/* (Same Color) 1 <-> 21 (Black/White) */
console.log(color.contrast(Color('black'))); // 9.757849865193812
/* or */
console.log(color.contrast('black')); // 9.757849865193812
Dark or Light
Get a boolean return value of whether a color is dark or light.
let color = new Color();
color.setHEX('#8fbc8f');
console.log(color.isDark()) // false
console.log(color.isLight()) // true
Color Manipulation
Manipulate to color object directly by altering saturation, lightness, opacity, or hue, negate the color, convert to greyscale, or mix it with another color.
let color1 = new Color('red'),
color2 = new Color('yellow');
/* Manipulate saturation */
color1.saturate('22%');
color1.desaturate(.22);
/* Manipulate hue */
color1.rotate(90);
color1.rotate('-240deg');
/* Manipulate shade & tint */
color1.lighten(.44);
color1.darken('44%');
/* Manipulate opacity */
color1.fade(0.5);
color1.opaquer('20%');
/* Negate color */
color1.negate();
/* Convert to greyscale */
color1.greyscale();
/* Mix another color */
color1.mix(color2);
color1.mix(Color('blue'));
/* or */
color1.mix(color2, 'add'); // Additive Mix
color1.mix(color2, 'sub'); // Subtractive Mix
/* or */
color1.mix(color2, 'add', 0.6); // Additive Mix with 60% of color2
color1.mix(color2, 'sub', 0.6); // Subtractive Mix with 60% of color2
Credits
This library was inspired by W3 Color Converter and color.
License
Copyright © 2022, Designer's Image. Licensed under the MIT License.