John Duncan Fergusson occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Cool tones set the register here - the blues and greens easily outweigh any warm accents. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. The highest-chroma note - #D9C8A2 - appears at just 8.0%, deployed as a precision accent against the quieter ground. The palette spans 53 value units: a measured range that delivers coherence over drama. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. Taken together, these qualities constitute John Duncan Fergusson's chromatic voice - distinctive enough to be read across an entire body of work.