William Hart distributes its values across the middle register, creating harmony without high contrast. Temperature is cool-dominant, with blue and green families claiming the largest areas. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. #49331E functions as the palette's exclamation mark: highest chroma, lowest percentage (9.6%). From deepest dark to palest light, the palette traverses 65 units of the value scale - a span that creates natural depth. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Taken together, these qualities constitute William Hart's chromatic voice - distinctive enough to be read across an entire body of work.