Mid-key values give Sebastiano Conca its characteristic quietness - nothing blazes, nothing disappears. Neither warm nor cool has the upper hand here; the equilibrium between the two generates the palette's visual energy. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. Sebastiano Conca gives 27.2% of the composition to a single #121621 - a decisive chromatic anchor. The highest-chroma note - #AF7D56 - appears at just 2.6%, deployed as a precision accent against the quieter ground. The value range spans 67 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. Palette 4 sits within the larger chromatic argument that Sebastiano Conca's complete body of work advances.