Japonism is strongly light-biased - shadow is suggested rather than declared. Built on cool foundations: the palette favours the blue-cyan-green arc. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. A single dominant - #F1EBD3 at 41.4% - sets the character of the whole composition. The saturated accent, #CBB492, registers at 3.6% - sparse enough to feel like a deliberate surprise. Spanning 35 units on the value axis, the palette achieves the balance between tonal flatness and fragmentation. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source.