Bone (#E3DAC9) and Oxblood (#4A0000) appear together across 6 master palettes in our corpus, most prominently in the work of Lajos Kassak, Alexei Harlamoff, and Henry Anderton and the Realism tradition. Painters typically deployed bone at an average of 24% of the canvas, with oxblood at 5%. Third colors most often completing the combination include Smoky black (#100C08), Rich black (#010203), and Jet (#343434).