The value structure of Francesco del Cossa is mid-key: quiet, controlled, and cohesive. Yellow, ochre, sienna: warm hues that Francesco del Cossa deploys as the palette's primary energy. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. Only 5.4% is devoted to #AC885C, yet that small allocation delivers the palette's entire chromatic tension. A value spread of 57 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. Palette 1 sits within the larger chromatic argument that Francesco del Cossa's complete body of work advances.