See also Ad Reinhard's blue paintings, which are combinations of very subtly different blues. I like them a lot and recently learned about them in Edward Tufte'

See also Ad Reinhard's blue paintings, which are combinations of very subtly different blues. I like them a lot and recently learned about them in Edward Tufte's excellent book Visual Explanations. https://www.google.com/search?q=ad+reinhardt+blue&tbm=isch https://www.google.com/search?q=ad+reinhardt+blue&tbm=isch