Low-key values are the structural spine of James McNeill Whistler, giving it gravity and atmosphere. Warmth dominates - the palette of James McNeill Whistler leans heavily on the yellow-orange-red arc of the colour wheel. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. A single dominant - #181717 at 33.0% - sets the character of the whole composition. The saturated accent, #D0BB9F, registers at 1.6% - sparse enough to feel like a deliberate surprise. At 59 units of value range, the palette has the tonal breadth to sustain complex spatial readings. This tonal restraint is characteristic of the James McNeill Whistler approach: colour serves light, not the reverse. In the context of James McNeill Whistler's full range of palettes, group 16 represents one movement in an ongoing chromatic dialogue.