The high-key values of quadratura give it an effulgent, almost bleached quality. Temperature reads distinctly warm: the reds and earth tones carry the compositional weight. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. #763B33 functions as the palette's exclamation mark: highest chroma, lowest percentage (3.1%). A value spread of 57 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light.