Cambridge blue (#A3C1AD) and Smoky black (#100C08) appear together across 6 master palettes in our corpus, most prominently in the work of Bernabé de Ayala, Alonzo Cano, and Julio Romero de Torres and the Baroque tradition. Painters typically deployed cambridge blue at an average of 25% of the canvas, with smoky black at 9%. Third colors most often completing the combination include Bistre (#3D2B1F), Bronze (#CD7F32), and Eggshell (#F0EAD6).