Spanish bistre (#807532) and Van Dyke brown (#664228) appear together across 6 master palettes in our corpus, most prominently in the work of Jean-Adrien Guignet, Alexander Kiselyov, and Bartolome Bermejo and the Realism tradition. Painters typically deployed spanish bistre at an average of 17% of the canvas, with van dyke brown at 11%. Third colors most often completing the combination include Bistre (#3D2B1F), Drab dark brown (#4A412A), and Khaki (#C3B091).