Values in Gustave Loiseau rest in the mid-range - neither dramatically lit nor steeped in shadow. Gustave Loiseau builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The highest-chroma note - #7D6A4A - appears at just 8.3%, deployed as a precision accent against the quieter ground. The value range of 44 units sits in the comfortable middle: enough depth, enough light, neither extreme. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. The palette is a signature: Gustave Loiseau's particular sense of value, warmth, and colour weight made legible.