Mid-key values give Mario Sironi its characteristic quietness - nothing blazes, nothing disappears. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. Only 7.0% is devoted to #82613E, yet that small allocation delivers the palette's entire chromatic tension. 61 units of value range underpin the palette's structural clarity: the eye always knows where light falls. In the context of Mario Sironi's full range of palettes, group 4 represents one movement in an ongoing chromatic dialogue.