darknessColor static method

double darknessColor(
  1. Color color
)

Implementation

static double darknessColor(Color color) {
  int red = hexToInt(color2HexStr(color).toString().substring(1, 3));
  int green = hexToInt(color2HexStr(color).toString().substring(3, 5));
  int blue = hexToInt(color2HexStr(color).toString().substring(5, 7));
  double darkness = 1 - (0.299 * red + 0.587 * green + 0.114 * blue) / 255;
  return darkness;
}