Rich black (#010203) and Space cadet (#1D2951) appear together across 6 master palettes in our corpus, most prominently in the work of Boleslas Biegas, Albert Rafols-Casamada, and Charles Robinson and the Symbolism tradition. Painters typically deployed rich black at an average of 27% of the canvas, with space cadet at 14%. Third colors most often completing the combination include Dark purple (#301934), Independence (#4C516D), and Zinnwaldite brown (#2C1608).