colorLab is a JavaScript library to calculate the difference between two colors in DeltaE (CIEDE2000).

npm install colorlab

import colorlab from colorlab;

let color1 = new colorlab.CIELAB(50.0000, 2.6772, -79.7751);
let color2 = new colorlab.CIELAB(50.0000, 0.0000, -82.7485);

// CIEDE2000 tells you the DeltaE, or perceptible color
// difference, between CIELAB color1 and CIELAB color2

color1.CIEDE2000(color2); // → 2.0425
// or
colorlab.CIEDE2000(color1, color2); // → 2.0425

• npm test - Lint the library and tests, then run the unit tests
• npm run lint - Lint the source and unit tests
• npm run watch - Continuously run the unit tests as you make changes to the source and test files themselves
• npm run test-browser - Build the library for use with the browser spec runner. Changes to the source will cause the runner to automatically refresh.
• npm run build - Lint then build the library
• npm run coverage - Generate a coverage report

The browser spec runner can be opened in a browser to run your tests. For it to work, you must first run npm run test-browser. This will set up a watch task that will automatically refresh the tests when your scripts, or the tests, change. The spec runner file is located at test/runner.html: open it in your browser to run tests.

[MIT][license] · Started by signalwerk supported by several contributors

• chromatist
• CSS Color Module Level 4
• Color-diff
• ColorMine
• Contrast Calculator
• colorjs

• Easing Gradients & PostCSS plugin
• CSS Color Module Level 4
• generator-babel-boilerplate
• Color-Visualisation in 3D Space
• imatest – Algorithms and reference formulas
• atcq – Ant-Tree Color Quantization

• [css-color] Separation / DeviceN color support
• PANTONE libraries