Costumbrismo is high-key - luminous, open, and weighted toward light. Cool tones set the register here - the blues and greens easily outweigh any warm accents. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. The dominant colour, #9EB7DB, takes 25.8% of the total area, establishing the overall mood before any other hue is introduced. The saturated accent, #A58445, registers at 2.8% - sparse enough to feel like a deliberate surprise. Value range is moderate at 53 units - enough contrast for legibility, not so much as to fragment the tonal unity. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky.