The value structure of Louis Hubbard Grimshaw is mid-key: quiet, controlled, and cohesive. Louis Hubbard Grimshaw tilts toward cool - blues and silver-greys carry the structural weight. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. The saturated accent, #362F14, registers at 9.9% - sparse enough to feel like a deliberate surprise. A value spread of 69 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Palette 3 sits within the larger chromatic argument that Louis Hubbard Grimshaw's complete body of work advances.