The high-key values of Giacomo Quarenghi give it an effulgent, almost bleached quality. Giacomo Quarenghi builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. The saturated accent, #564839, registers at 4.7% - sparse enough to feel like a deliberate surprise. 65 units of value range underpin the palette's structural clarity: the eye always knows where light falls. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. Palette 3 sits within the larger chromatic argument that Giacomo Quarenghi's complete body of work advances.