Guido Reni sits in the centre of the value range, lending the palette a sense of even, sustained light. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. #C6914E delivers the chromatic peak at only 4.7% - a small shot of colour with outsized visual impact. From deepest dark to palest light, the palette traverses 74 units of the value scale - a span that creates natural depth. This is the light Guido Reni preferred, made measurable.