Mid-key values give Auguste Toulmouche its characteristic quietness - nothing blazes, nothing disappears. 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 highest-chroma note - #AE8D4E - appears at just 3.6%, deployed as a precision accent against the quieter ground. The full value range is 67 units: broad enough to build convincing three-dimensional form. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Palette 3 sits within the larger chromatic argument that Auguste Toulmouche's complete body of work advances.