Copper red (#CB6D51) is a mid-tone warm shade that appears across 14 master palettes in our corpus, most prominently in the work of Otto Eckmann, Roger de La Fresnaye, and Felicien Rops and the Art Nouveau tradition. Master painters paired it most often with Raisin black (#242124), Bone (#E3DAC9), and Khaki (#C3B091). The combination forms a sun-bleached, daylight chord, built on closely related hues, reads as a unified warm palette, with the pair colors held at a similar value to the source.
