Powder blue (#B0E0E6) and Umber (#635147) appear together across 6 master palettes in our corpus, most prominently in the work of Eugene Lanceray, Telemaco Signorini, and Ilya Repin and the Realism tradition. Painters typically deployed powder blue at an average of 16% of the canvas, with umber at 8%. Third colors most often completing the combination include Bone (#E3DAC9), Laurel green (#A9BA9D), and Jet (#343434).