Mid-key values give Harry Phelan Gibb its characteristic quietness - nothing blazes, nothing disappears. The palette achieves thermal balance - reds and blues, ochres and greens, each holding the other in check. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. #B6A452 functions as the palette's exclamation mark: highest chroma, lowest percentage (2.2%). A value spread of 66 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. This is palette 4 of Harry Phelan Gibb's sequence - a single chapter in a chromatic story told across many works.