Uemura Shoen is high in key: pale, luminous, and filled with optical air. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. Colours are neither washed out nor blazing; they occupy the productive middle ground of the chroma scale. #527DE7 at 31.6% is both the most chromatic and one of the largest colours in the palette - chroma as mass rather than as highlight. From deepest dark to palest light, the palette traverses 69 units of the value scale - a span that creates natural depth. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Palette 4 sits within the larger chromatic argument that Uemura Shoen's complete body of work advances.