Joan Brull keeps values measured and balanced, a hallmark of tonal restraint. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. #653732 functions as the palette's exclamation mark: highest chroma, lowest percentage (3.5%). At 55 units of value range, the palette has the tonal breadth to sustain complex spatial readings. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Palette 9 sits within the larger chromatic argument that Joan Brull's complete body of work advances.