The colour logic of American Realism is concentrated here: its characteristic value range, temperature bias, and chroma level. Mid-key values give American Realism its characteristic quietness - nothing blazes, nothing disappears. Warm and cool tones are held in careful balance - neither family dominates, creating tension and resolution simultaneously. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. 33.5% of the palette belongs to #1D1A1B, a concentration that makes it the unmistakable visual centre. Only 3.6% is devoted to #AB5C3C, yet that small allocation delivers the palette's entire chromatic tension. The value range spans 63 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. Applied to contemporary work, these proportions immediately evoke the American Realism register.