chroma-js/src/interpolator/lab.js

JavaScript library for color conversions

import '../io/lab/index.js';
import index from './index.js';
import Color from '../Color.js';

const lab = (col1, col2, f) => {
    const xyz0 = col1.lab();
    const xyz1 = col2.lab();
    return new Color(
        xyz0[0] + f * (xyz1[0] - xyz0[0]),
        xyz0[1] + f * (xyz1[1] - xyz0[1]),
        xyz0[2] + f * (xyz1[2] - xyz0[2]),
        'lab'
    );
};

// register interpolator
index.lab = lab;

export default lab;