The value structure of Jean-Leon Gerome is mid-key: quiet, controlled, and cohesive. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. The saturated accent, #B3A17F, registers at 10.7% - sparse enough to feel like a deliberate surprise. At 55 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. In the context of Jean-Leon Gerome's full range of palettes, group 12 represents one movement in an ongoing chromatic dialogue.