Isaac Fuller keeps values measured and balanced, a hallmark of tonal restraint. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. At 30.1%, #3B2B1D functions less as a colour accent and more as a complete atmospheric environment. The most saturated colour, #743C1E, is reserved to 6.5% of the surface, where it acts as a focal punctuation. The full value range is 58 units: broad enough to build convincing three-dimensional form. In the context of Isaac Fuller's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.