function shortenRgb(red, green, blue) {
  var normalizedRed = Math.max(0, Math.min(parseInt(red), 255));
  var normalizedGreen = Math.max(0, Math.min(parseInt(green), 255));
  var normalizedBlue = Math.max(0, Math.min(parseInt(blue), 255));

  // Credit: Asen  http://jsbin.com/UPUmaGOc/2/edit?js,console
  return (
    '#' +
    (
      '00000' +
      (
        (normalizedRed << 16) |
        (normalizedGreen << 8) |
        normalizedBlue
      ).toString(16)
    ).slice(-6)
  );
}

module.exports = shortenRgb;