Smoky black (#100C08) and St. Patrick's blue (#23297A) appear together across 5 master palettes in our corpus, most prominently in the work of Paul Klee, Marsden Hartley, and Philippe de Champaigne and the Expressionism tradition. Painters typically deployed smoky black at an average of 17% of the canvas, with st. patrick's blue at 6%. Third colors most often completing the combination include Rosso corsa (#D40000), Isabelline (#F4F0EC), and International orange (#BA160C).