The value structure of Charles Robinson is mid-key: quiet, controlled, and cohesive. The dominant temperature is warm, with earth tones and fire-hues setting the emotional key. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. The most saturated colour, #AA6742, is reserved to 2.6% of the surface, where it acts as a focal punctuation. 68 units of value range underpin the palette's structural clarity: the eye always knows where light falls. In the context of Charles Robinson's full range of palettes, group 4 represents one movement in an ongoing chromatic dialogue.