Hex to HSL

hextohsl.js

function toHSL(hex) {
  var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);

  var r = parseInt(result[1], 16);
  var g = parseInt(result[2], 16);
  var b = parseInt(result[3], 16);

  (r /= 255), (g /= 255), (b /= 255);
  var max = Math.max(r, g, b),
    min = Math.min(r, g, b);
  var h,
    s,
    l = (max + min) / 2;

  if (max == min) {
    h = s = 0;
  } else {
    var d = max - min;
    s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
    switch (max) {
      case r:
        h = (g - b) / d + (g < b ? 6 : 0);
        break;
      case g:
        h = (b - r) / d + 2;
        break;
      case b:
        h = (r - g) / d + 4;
        break;
    }
    h /= 6;
  }

  s = s * 100;
  s1 = Math.round(s);
  l = l * 100;
  l1 = Math.round(l);
  h = Math.round(360 * h);

  console.log("hsl(" + h + ", " + s.toFixed(1) + "%, " + l.toFixed(1) + "%)");
}