Dark sienna (#3C1414) and Japanese violet (#5B3256) appear together across 6 master palettes in our corpus, most prominently in the work of George Henry, Franz Xaver Winterhalter, and Kuzma Petrov-Vodkin and the Impressionism tradition. Painters typically deployed dark sienna at an average of 11% of the canvas, with japanese violet at 7%. Third colors most often completing the combination include Dark slate blue (#483D8B), Royal blue (#002366), and Platinum (#E5E4E2).