Placido Costanzi occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. The dominant temperature is warm, with earth tones and fire-hues setting the emotional key. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The saturated accent, #D7AC9B, registers at 6.7% - sparse enough to feel like a deliberate surprise. The palette spans 51 value units: a measured range that delivers coherence over drama. This is palette 1 of Placido Costanzi's sequence - a single chapter in a chromatic story told across many works.