Ruby red (#9B111E) and Windsor tan (#A75502) appear together across 2 master palettes in our corpus, most prominently in the work of Wladyslaw Strzeminski and the Abstract Art tradition. Painters typically deployed ruby red at an average of 23% of the canvas, with windsor tan at 15%. Third colors most often completing the combination include Camel (#C19A6B), Persian red (#CC3333), and Tourmaline (#86A1A9).