Green is also the most challenging one, since our perception of green is twice as good as with other colours. Blue, btw, is generally perceived darker than the

Green is also the most challenging one, since our perception of green is twice as good as with other colours. Blue, btw, is generally perceived darker than the technical brightness of the color would suggest. A general advice may be to dial down saturation: especially when applied to larger areas, colours tend to be more intensive as they may appear in a colour picker.