The high-key values of James McNeill Whistler give it an effulgent, almost bleached quality. Temperature is cool-dominant, with blue and green families claiming the largest areas. Chroma is moderate: colours carry enough saturation to be read as colour, but the palette stops well short of garish intensity. The highest-chroma note - #5896C2 - appears at just 8.7%, deployed as a precision accent against the quieter ground. Value range is moderate at 37 units - enough contrast for legibility, not so much as to fragment the tonal unity. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. In the context of James McNeill Whistler's full range of palettes, group 7 represents one movement in an ongoing chromatic dialogue.