Maximal hue difference: blue-purple figure on a faintly yellow ground

Maximal luminosity difference: a lot of white added to a little bit of yellow for the ground; the figure still dark blue-purple, but made a little lighter so it would be high-intensity

Maximal intensity difference: very high intensity blue-purple figure on a very low-intensity slightly yellow ground

William Tapley
Art of Color
Color Descriptions of
Sets   Paintings