The value structure of William Williams is mid-key: quiet, controlled, and cohesive. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. The most saturated colour, #E4D0C1, is reserved to 7.1% of the surface, where it acts as a focal punctuation. 60 units of value range underpin the palette's structural clarity: the eye always knows where light falls. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. In the context of William Williams's full range of palettes, group 6 represents one movement in an ongoing chromatic dialogue.