Navy blue (#1974D2) and Opal (#A8C3BC) appear together across 6 master palettes in our corpus, most prominently in the work of Uemura Shoen and the Meiji Period (1868–1912) tradition. Painters typically deployed navy blue at an average of 20% of the canvas, with opal at 3%. Third colors most often completing the combination include Light periwinkle (#C5CBE1), Lavender gray (#C4C3D0), and Platinum (#E5E4E2).