James McNeill Whistler is high in key: pale, luminous, and filled with optical air. James McNeill Whistler builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma is held at a comfortable level - distinct colours, but no single hue is allowed to overwhelm. At 2.8%, #A56333 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. 48 units of value spread create a palette that is varied but unified - contrast in the service of harmony. 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 James McNeill Whistler's full range of palettes, group 5 represents one movement in an ongoing chromatic dialogue.