Leonardo da Vinci is high in key: pale, luminous, and filled with optical air. Leonardo da Vinci builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma is moderate: colours carry enough saturation to be read as colour, but the palette stops well short of garish intensity. The highest-chroma note - #906A30 - appears at just 5.1%, deployed as a precision accent against the quieter ground. Value range is moderate at 40 units - enough contrast for legibility, not so much as to fragment the tonal unity. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Leonardo da Vinci's palette 1 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.