The palette of Francisco Pacheco sits in the lower register of the value scale - dense, contained, and weighted. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. All colours lean toward grey, building depth through value rather than colour punch. #292424 at 28.9% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. The saturated accent, #914828, registers at 2.7% - sparse enough to feel like a deliberate surprise. The value range spans 57 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. This tonal restraint is characteristic of the Francisco Pacheco approach: colour serves light, not the reverse. Palette 4 sits within the larger chromatic argument that Francisco Pacheco's complete body of work advances.