Art Nouveau distributes its values across the middle register, creating harmony without high contrast. Temperature reads distinctly warm: the reds and earth tones carry the compositional weight. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The highest-chroma note - #CBAB7A - appears at just 5.6%, deployed as a precision accent against the quieter ground. The value range spans 62 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy.