Desert sand (#EDC9AF) and Indigo dye (#00416A) appear together across 6 master palettes in our corpus, most prominently in the work of Bill Traylor, Emil Nolde, and Louis Soutter and the Outsider art (Art brut) tradition. Painters typically deployed desert sand at an average of 21% of the canvas, with indigo dye at 4%. Third colors most often completing the combination include Deep champagne (#FAD6A5), Medium carmine (#AF4035), and Dark sienna (#3C1414).