Darkness anchors Guido Reni; light is rationed, creating dramatic contrast rather than open air. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. #191510 at 57.2% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. #8D5B33 functions as the palette's exclamation mark: highest chroma, lowest percentage (2.8%). 65 units of value range underpin the palette's structural clarity: the eye always knows where light falls. Together these qualities place Guido Reni firmly in the tonal tradition - concerned with mood and atmosphere rather than chromatic display. This is palette 12 of Guido Reni's sequence - a single chapter in a chromatic story told across many works.