Café noir (#4B3621) and Slate gray (#708090) appear together across 6 master palettes in our corpus, most prominently in the work of Francesco Francia, Emil Karl Rau, and Georg Heinrich Crola and the Romanticism tradition. Painters typically deployed café noir at an average of 18% of the canvas, with slate gray at 11%. Third colors most often completing the combination include Raisin black (#242124), Eerie black (#1B1B1B), and Khaki (#C3B091).