@onesy/utils/rgbToHslPure.js

Utils

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const rgbToHslPure = (r_, g_, b_) => {
    let [r, g, b] = [r_, g_, b_];
    r /= 255;
    g /= 255;
    b /= 255;
    // find greatest and smallest channel values
    const cmin = Math.min(r, g, b);
    const cmax = Math.max(r, g, b);
    const delta = cmax - cmin;
    let h = 0;
    let s = 0;
    let l = 0;
    if (delta === 0)
        h = 0;
    else if (cmax === r)
        h = ((g - b) / delta) % 6;
    else if (cmax === g)
        h = (b - r) / delta + 2;
    else
        h = (r - g) / delta + 4;
    h = Math.round(h * 60);
    if (h < 0)
        h += 360;
    l = (cmax + cmin) / 2;
    s = delta === 0 ? 0 : delta / (1 - Math.abs(2 * l - 1));
    s = +(s * 100).toFixed(0);
    l = +(l * 100).toFixed(0);
    return [h, s, l];
};
exports.default = rgbToHslPure;