Sepia (#704214) and Smoky black (#100C08) appear together across 6 master palettes in our corpus, most prominently in the work of Luis de Morales, Vicente López Portaña, and August Jernberg and the Baroque tradition. Painters typically deployed sepia at an average of 33% of the canvas, with smoky black at 11%. Third colors most often completing the combination include Zinnwaldite brown (#2C1608), Bistre (#3D2B1F), and Metallic Sunburst (#9C7C38).