Roger Fry is low-key throughout, a quality associated with Obsidian Sienna - deep shadows dominate the composition. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The most saturated colour, #3C3311, is reserved to 7.6% of the surface, where it acts as a focal punctuation. Spanning 35 units on the value axis, the palette achieves the balance between tonal flatness and fragmentation. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. In the context of Roger Fry's full range of palettes, group 6 represents one movement in an ongoing chromatic dialogue.