lighten method

Color lighten(
  1. Color color, [
  2. double amount = .05
])

Implementation

Color lighten(Color color, [double amount = .05]) {
  assert(amount >= 0 && amount <= 1);
  final hsl = HSLColor.fromColor(color);
  final hslLight = hsl.withLightness(
    (hsl.lightness + amount).clamp(0.0, 1.0),
  );
  return hslLight.toColor();
}