Katsushika Hokusai is high-key - luminous, open, and weighted toward light. Temperature is cool-dominant, with blue and green families claiming the largest areas. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. A single dominant - #E5CF9F at 26.4% - sets the character of the whole composition. #3A5A74 functions as the palette's exclamation mark: highest chroma, lowest percentage (2.6%). The full value range is 55 units: broad enough to build convincing three-dimensional form. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Katsushika Hokusai's palette 5 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.