Values in Charles Warren Eaton rest in the mid-range - neither dramatically lit nor steeped in shadow. 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. At 4.9%, #573C30 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. A value spread of 62 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 4 of Charles Warren Eaton's sequence - a single chapter in a chromatic story told across many works.