Eerie black (#1B1B1B) and Granite gray (#676767) appear together across 6 master palettes in our corpus, most prominently in the work of Josef Capek, Juan Gris, and Joseph Stella and the Cubism tradition. Painters typically deployed eerie black at an average of 30% of the canvas, with granite gray at 13%. Third colors most often completing the combination include Bistre (#3D2B1F), Black olive (#3B3C36), and Dark lava (#483C32).