sepia property
Converts the color into its sepia tone equivalent.
Implementation
static ColorFilter sepia = new ColorFilter((Color baseColor, [List? args]) {
RgbColor color = baseColor.toRgbColor();
return new RgbColor(min(RgbColor.rMax, (color.r * 0.393 + color.g * 0.769 + color.b * 0.189)),
min(RgbColor.gMax, (color.r * 0.349 + color.g * 0.686 + color.b * 0.168)),
min(RgbColor.bMax, (color.r * 0.272 + color.g * 0.534 + color.b * 0.131))).toCielabColor();
}, RgbColor);