Glaucous (#6082B6) and Raisin black (#242124) appear together across 6 master palettes in our corpus, most prominently in the work of Sassoferrato, John Duncan Fergusson, and Marc Chagall and the Baroque tradition. Painters typically deployed glaucous at an average of 20% of the canvas, with raisin black at 13%. Third colors most often completing the combination include Timberwolf (#DBD7D2), Umber (#635147), and Khaki (#C3B091).