Marcel Duchamp is high-key - luminous, open, and weighted toward light. Marcel Duchamp keeps warm and cool in parity, a balance that lends the work a perceptual shimmer. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. Marcel Duchamp gives 41.9% of the composition to a single #F2F2F1 - a decisive chromatic anchor. The saturated accent, #DF8733, registers at 2.3% - sparse enough to feel like a deliberate surprise. A value spread of 72 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. In the context of Marcel Duchamp's full range of palettes, group 5 represents one movement in an ongoing chromatic dialogue.