Cosmic cobalt (#2E2D88) and Smoky black (#100C08) appear together across 6 master palettes in our corpus, most prominently in the work of Paul Klee, and Wassily Kandinsky and the Expressionism tradition. Painters typically deployed cosmic cobalt at an average of 7% of the canvas, with smoky black at 6%. Third colors most often completing the combination include Dandelion (#FED85D), Mint cream (#F5FFFA), and Marigold (#EAA221).