src/utils/ColorUtil.js

export default {
  getRGB: function(color) {
    var rgb = {};

    if (typeof color === 'number') {
      hex = Math.floor(color);
      rgb.r = ((color >> 16) & 255) / 255;
      rgb.g = ((color >> 8) & 255) / 255;
      rgb.b = (color & 255) / 255;
    } else if (typeof color === 'string') {
      var m;

      if (
        (m = /^(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec(
          color
        ))
      ) {
        rgb.r = Math.min(255, parseInt(m[1], 10)) / 255;
        rgb.g = Math.min(255, parseInt(m[2], 10)) / 255;
        rgb.b = Math.min(255, parseInt(m[3], 10)) / 255;
        // eslint-disable-next-line no-useless-escape
      } else if ((m = /^\#([A-Fa-f0-9]+)$/.exec(color))) {
        var hex = m[1];

        rgb.r = parseInt(hex.charAt(0) + hex.charAt(1), 16) / 255;
        rgb.g = parseInt(hex.charAt(2) + hex.charAt(3), 16) / 255;
        rgb.b = parseInt(hex.charAt(4) + hex.charAt(5), 16) / 255;
      }
    } else {
      rgb.r = color.r;
      rgb.g = color.g;
      rgb.b = color.b;
    }

    return rgb;
  },
};