Sonia Delaunay distributes its values across the middle register, creating harmony without high contrast. Sonia Delaunay keeps warm and cool in parity, a balance that lends the work a perceptual shimmer. All colours lean toward grey, building depth through value rather than colour punch. The highest-chroma note - #A66D4E - appears at just 8.2%, deployed as a precision accent against the quieter ground. The palette spans 41 value units: a measured range that delivers coherence over drama. Palette 4 sits within the larger chromatic argument that Sonia Delaunay's complete body of work advances.