@atlaskit/tokens/dist/cjs/utils/relative-luminance-w3-c.js

Design tokens are the single source of truth to name and store design decisions.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.relativeLuminanceW3C = relativeLuminanceW3C;
function relativeLuminanceW3C(r, g, b) {
  var RsRGB = r / 255;
  var GsRGB = g / 255;
  var BsRGB = b / 255;
  var R = RsRGB <= 0.03928 ? RsRGB / 12.92 : Math.pow((RsRGB + 0.055) / 1.055, 2.4);
  var G = GsRGB <= 0.03928 ? GsRGB / 12.92 : Math.pow((GsRGB + 0.055) / 1.055, 2.4);
  var B = BsRGB <= 0.03928 ? BsRGB / 12.92 : Math.pow((BsRGB + 0.055) / 1.055, 2.4);

  // For the sRGB colorspace, the relative luminance of a color is defined as:
  var L = 0.2126 * R + 0.7152 * G + 0.0722 * B;
  return L;
}