The value structure of Gustave Moreau is mid-key: quiet, controlled, and cohesive. Warm and cool tones are held in careful balance - neither family dominates, creating tension and resolution simultaneously. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. #A18656 delivers the chromatic peak at only 8.0% - a small shot of colour with outsized visual impact. The full value range is 72 units: broad enough to build convincing three-dimensional form. Palette 10 sits within the larger chromatic argument that Gustave Moreau's complete body of work advances.