Post-Impressionism occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. The artist keeps warm and cool in parity, a balance that lends the work a perceptual shimmer. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. #A55C41 functions as the palette's exclamation mark: highest chroma, lowest percentage (4.4%). At 58 units of value range, the palette has the tonal breadth to sustain complex spatial readings.