Andrea Solario is low-key throughout, a quality associated with Obsidian Sienna - deep shadows dominate the composition. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. #040503 claims 63.9% of the surface, functioning as the work's tonal foundation. The most saturated colour, #E4C89E, is reserved to 1.9% of the surface, where it acts as a focal punctuation. The value range spans 74 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. In the context of Andrea Solario's full range of palettes, group 5 represents one movement in an ongoing chromatic dialogue.