Henri-Edmond Cross is high in key: pale, luminous, and filled with optical air. The palette achieves thermal balance - reds and blues, ochres and greens, each holding the other in check. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. The highest-chroma note - #BF904C - appears at just 5.3%, deployed as a precision accent against the quieter ground. 55 units of value range underpin the palette's structural clarity: the eye always knows where light falls. Palette 9 sits within the larger chromatic argument that Henri-Edmond Cross's complete body of work advances.