Claude Arnulphy occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Temperature is balanced: the palette pits warm earth against cool sky without declaring a winner. All colours lean toward grey, building depth through value rather than colour punch. #3C3232 at 26.8% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. The most saturated colour, #9A6728, is reserved to 5.7% of the surface, where it acts as a focal punctuation. The full value range is 71 units: broad enough to build convincing three-dimensional form. This is palette 4 of Claude Arnulphy's sequence - a single chapter in a chromatic story told across many works.