Khaki (#C3B091) and Opal (#A8C3BC) appear together across 6 master palettes in our corpus, most prominently in the work of Georgina de Albuquerque, Henri-Pierre Picou, and Kimon Loghi and the Impressionism tradition. Painters typically deployed khaki at an average of 30% of the canvas, with opal at 16%. Third colors most often completing the combination include Bone (#E3DAC9), Shadow (#8A795D), and Timberwolf (#DBD7D2).