Find the name of the color given a hex, rgb and hsl string!
This package provides a function to find the closest color within an array of colors. It uses the Euclidean distance formula to calculate the distance between colors in the RGB color space.
Designed with the performance in mind, it is 10 times faster than the self-proclaimed fastest color conversion plugin!
Library | Size (minified) |
Size (gzipped) |
|
---|---|---|---|
+ plugins |
npm run benchmark
in the library folder. See benchmarks.colord
package is meant without the color definitions while color-2-name
already has everything you need bundled insideTo install the package, run the following command:
npm install color-2-name
Then you can import or require the color-2-name function e.g. closest
function from the color-2-name package:
// ESM (import) - tree shakable
import {closest, distance, rgbToHex} from 'color-2-name';
closest('hsla(210deg 10% 96%)') // white
// CJS (require)
var color2Name = require("color-2-name")
color2Name.closest('#abcdef')
To run the script in the browser, add the color-2-name
add it to the header or footer like below
<script src="https://www.unpkg.com/color-2-name"></script>
<script>
// Then the color-2-name module will be available using the following command:
// You will find the packed script loaded into window.color2name
closest('#123456') // returns "name" : "midnightblue" , "color" : "rgb(25,25,112)"
</script>
This Package includes the following functions:
Returns the closest color name
// Here is an example of how to use the findClosestColor function:
const closestColor = closest('#ff8800');
console.log(closestColor); // { name: 'red', color: 'rgb(255,0,0)' }
// You can also use your custom set as comparation
return closest('#ff8800', [
[255, 0, 0, 'red'],
[0, 255, 0, 'green']
]); // -> { name: 'red', color: 'rgb(255,0,0)' }
// Alternatively you can also get the closest color in different color spaces in the following way:
return closest('#ff00ff', undefined, {info: true});
// {
// name: 'magenta',
// color: 'rgb(255,0,255),
// hex: '#ff00ff',
// hsl: 'hsl(300deg 100% 50%)',
// distance: 0
// }
In this example, the hex color '#ff8800' (which is a shade of orange) is compared to the colors in the colors array. The function returns the object with the name and hex value of the color that is closest to it, which in this case is the object for the color red.
Arguments:
color
: a string representing a color, accepts hexadecimal, rgb and hsl with and without alpha channel (e.g. #ff0000
for hex red).colors
: (optional) you can provide to this function a custom list of color names to be used (replaces the default)args
: (optional) an Object that contains setup for this moduleargs.info
: (optional) set to true to display additional information the found color, like the hex value and the distance from the originalRETURNS an object with the name and nearest color that is closest to the given color. (eg. { name: 'red', color: 'rgb(255,0,0)' }
)
Computes the distance between two colors using the euclidean distance formula.
// Here is an example on how get the distance between two colors
const colorDivergence = distance([120, 255, 200], [255, 255, 255])
console.log(colorDivergence); // 123.465
Arguments:
rgb1
: an array of values representing rgb of the first color to be comparedrgb2
: an array of values representing rgb of the second color to be comparedRETURNS the distance between two colors, the maximum distance is >441 and the color is exactly the same when the value is 0
Convert a rgb color into hexadecimal color
// note: the rgb value is converted without take into account the alpha channel
const hex = rgbToHex('rgb(255,255,255)')
const hex2 = rgbToHex('rgb(255 255 255 / .5)')
// prints the hex result
console.log(hex); // #FFFFFF
console.log(hex2); // #FFFFFF
Arguments:
rgb
: a valid css rgb or rgba value (eg. rgb(1,2,3))RETURNS the hex value of the color
search into ColorSet for the given color
// note: the rgb value is converted without take into account the alpha channel
const white = getColor('white') // {"hex": "#ffffff", "hsl": "hsl(0,0%,100%)", "rgb": "rgb(255,255,255)"}
const alertColor = getColor('red') // {"hex": "#ff0000", "hsl": "hsl(0,100%,50%)", "rgb": "rgb(255,0,0)"}
// prints the hex result
console.log(alertColor.hsl); // #FFFFFF
console.log(alertColor.hex); // #FF0000
console.log("transparent red: " + alertColor.hex + "88"); // #FF000088
Arguments:
colorName
: the name of a color you need find in the colorsetRETURNS an Object with the color requested converted into hex, rgb and hsl
Check if the color is light (optically closer to white)
Check if the color is dark (optically closer to black)
returns the closest RGB color
Arguments:
color
: a valid css color stringExamples:
// note: the rgb value is converted without take into account the alpha channel
isLight('#fff') // true
isDark('#fff') // false
closestRGB('#FF1234') // red
First thing, clone the color-2-name package with git clone https://github.com/wp-blocks/color-2-name.git
then cd into color-2-name folder.
In order to build a color set you need a json object with the following properties:
name
- the name of the color (like "Orange")color
- the hex color value (like #FFAA00)save it into ./src/data/ as "myNewColorSet.json". the file will contain something like this:
[
{ "name": "white", "color": "#FFFFFF" },
{ "name": "black", "color": "#000000" },
{ "name": "red", "color": "#FF0000" },
{ "name": "green", "color": "#008000" },
{ "name": "blue", "color": "#0000FF" }
]
# then run the following command
$ node colorSetUtils.mjs myNewColorSet
RETURNS A new file called "myNewColorSet.ts" containing the data for this module will be written inside the ./src/data/ folder
This module is meant to be used in conjunction with React's color picker, so that the color name is shown as you select it. It can also be used in other ways of course, such as to determine whether a color is light or dark (using a custom color set with black and white) etc.
This package uses the Euclidean distance formula to calculate the distance between colors in the RGB color space. While this is a simple and widely used method for comparing colors, it may not always give the most accurate results. In particular, it does not take into account the perception of colors by the human eye, which can be affected by factors such as the surrounding colors and the luminance of the colors.
If you would like to contribute to this package, please follow the guidelines in the CONTRIBUTING.md file.
This package is licensed under the ISC License. See the LICENSE file for details.
The wiki about the Euclidean distance formula https://en.wikipedia.org/wiki/Color_difference
Some useful ideas and codes has been taken from the article on the website css-tricks at https://css-tricks.com/converting-color-spaces-in-javascript/