James McNeill Whistler is strongly light-biased - shadow is suggested rather than declared. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. The saturated accent, #57492B, registers at 0.7% - sparse enough to feel like a deliberate surprise. The value range of 51 units sits in the comfortable middle: enough depth, enough light, neither extreme. 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 1 represents one movement in an ongoing chromatic dialogue.