luma property
num
luma
The luma, or mean proportion component weighted by
human perception of lightness, of color
.
Implementation
num get luma {
final components = rgbProportions;
return List.generate(3, (i) => components[i] * [0.299, 0.587, 0.114][i])
.fold(0, (a, b) => a + b);
}