hslTorgb method Null safety
Implementation
static List<int> hslTorgb(num hue, num sat, num light) {
List<double> rgb1 = hslToRgb1Scale(hue, sat, light);
return [
(rgb1[0] * 255).round(),
(rgb1[1] * 255).round(),
(rgb1[2] * 255).round()
];
}