Glenn Cooper Henshaw distributes its values across the middle register, creating harmony without high contrast. Cool tones set the register here - the blues and greens easily outweigh any warm accents. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The most saturated colour, #608091, is reserved to 5.4% of the surface, where it acts as a focal punctuation. At 27 units across the value scale, the palette keeps contrast readable without letting it dominate. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. In the context of Glenn Cooper Henshaw's full range of palettes, group 5 represents one movement in an ongoing chromatic dialogue.