Teófilo Castillo Guas distributes its values across the middle register, creating harmony without high contrast. Temperature is cool-dominant, with blue and green families claiming the largest areas. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. A single dominant - #38362E at 28.5% - sets the character of the whole composition. At 7.9%, #6D5840 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. The value range spans 70 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 1 of Teófilo Castillo Guas's sequence - a single chapter in a chromatic story told across many works.