Darkness anchors Achille Devéria; light is rationed, creating dramatic contrast rather than open air. Achille Devéria orchestrates warmth above all else - reds, ambers, and siennas take the lead. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. The most saturated colour, #563527, is reserved to 13.0% of the surface, where it acts as a focal punctuation. The palette spans 36 value units: a measured range that delivers coherence over drama. Together these qualities place Achille Devéria firmly in the tonal tradition - concerned with mood and atmosphere rather than chromatic display. This is palette 4 of Achille Devéria's sequence - a single chapter in a chromatic story told across many works.