toHexStringRGB method

Implementation

String toHexStringRGB() {
  final red = r.round().toRadixString(16).padLeft(2, '0');
  final green = g.round().toRadixString(16).padLeft(2, '0');
  final blue = b.round().toRadixString(16).padLeft(2, '0');
  return '#$red$green$blue';
}