Serge Sudeikin is strongly light-biased - shadow is suggested rather than declared. Serge Sudeikin tilts toward cool - blues and silver-greys carry the structural weight. All colours lean toward grey, building depth through value rather than colour punch. The saturated accent, #714F2F, registers at 6.2% - sparse enough to feel like a deliberate surprise. The value range spans 68 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. In the context of Serge Sudeikin's full range of palettes, group 4 represents one movement in an ongoing chromatic dialogue.