Harold Swanwick 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. 30.0% of the palette belongs to #4D3C30, a concentration that makes it the unmistakable visual centre. #8E724A delivers the chromatic peak at only 10.0% - a small shot of colour with outsized visual impact. The value range of 51 units sits in the comfortable middle: enough depth, enough light, neither extreme. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. These proportions encode Harold Swanwick's instinctive sense of how much of each quality the eye can hold.