The value structure of Costumbrismo is mid-key: quiet, controlled, and cohesive. The palette orchestrates warmth above all else - reds, ambers, and siennas take the lead. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. The highest-chroma note - #A5795C - appears at just 9.4%, deployed as a precision accent against the quieter ground. From deepest dark to palest light, the palette traverses 58 units of the value scale - a span that creates natural depth.