The value structure of Art Nouveau is mid-key: quiet, controlled, and cohesive. The palette orchestrates warmth above all else - reds, ambers, and siennas take the lead. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. #CCA35E delivers the chromatic peak at only 2.9% - a small shot of colour with outsized visual impact. From deepest dark to palest light, the palette traverses 56 units of the value scale - a span that creates natural depth.