Phthalo green (#123524) and Smoky black (#100C08) appear together across 6 master palettes in our corpus, most prominently in the work of Arnold Marc Gorter, Bartolomeo Veneto, and Vicente López Portaña and the Realism tradition. Painters typically deployed phthalo green at an average of 31% of the canvas, with smoky black at 16%. Third colors most often completing the combination include Zinnwaldite brown (#2C1608), Olive Drab (#3C341F), and Café noir (#4B3621).