Cerulean frost (#6D9BC3) and Eerie black (#1B1B1B) appear together across 6 master palettes in our corpus, most prominently in the work of Franz Dietrich, Marcantonio Franceschini, and James Hamilton and the Romanticism tradition. Painters typically deployed cerulean frost at an average of 23% of the canvas, with eerie black at 7%. Third colors most often completing the combination include Lavender gray (#C4C3D0), Dark lava (#483C32), and Khaki (#C3B091).