Jonquil (#F4CA16) and Rich black (#010203) appear together across 5 master palettes in our corpus, most prominently in the work of Bart van der Leck, and Robert Delaunay and the De Stijl (Neoplasticism) tradition. Painters typically deployed jonquil at an average of 7% of the canvas, with rich black at 16%. Third colors most often completing the combination include Trypan Blue (#1C05B3), Beige (#F5F5DC), and Rosso corsa (#D40000).