Brown (#964B00) and Dark sienna (#3C1414) appear together across 6 master palettes in our corpus, most prominently in the work of Frederick Morgan, Ralph Blakelock, and Hendrick Terbrugghen and the Romanticism tradition. Painters typically deployed brown at an average of 12% of the canvas, with dark sienna at 7%. Third colors most often completing the combination include Seal brown (#59260B), Ocher (#CC7722), and Smoky black (#100C08).