Dark red (#8B0000) and Rich black (#010203) appear together across 3 master palettes in our corpus, most prominently in the work of Andres de Santa Maria, and Nicolas Tournier and the Impressionism tradition. Painters typically deployed dark red at an average of 10% of the canvas, with rich black at 22%. Third colors most often completing the combination include Dark sienna (#3C1414), Pullman Brown (#644117), and Golden brown (#996515).