FromArgb vs FromScRgb

Question

Should these two expressions result in colors which are roughly the same?

Color.FromArgb(255, 255, 255, (byte)0.25 * 255))

Color.FromScRgb(1.0f, 1.0f, 1.0f,         


        

Answer 1

The basic reason behind this is mentioned by mzzzzb above:

the scale 0.0 - 1.0 does not map linearly to 0 - 255

I.e. the ScRgb components do not map linearly to the Argb components.