Charcoal (#36454F) and Eerie black (#1B1B1B) appear together across 6 master palettes in our corpus, most prominently in the work of Rosa Bonheur, Ivan Aivazovsky, and Jose Clemente Orozco and the Romanticism tradition. Painters typically deployed charcoal at an average of 25% of the canvas, with eerie black at 19%. Third colors most often completing the combination include Khaki (#C3B091), Bistre (#3D2B1F), and Shadow (#8A795D).