Frank Xavier Leyendecker is high in key: pale, luminous, and filled with optical air. Temperature is balanced: the palette pits warm earth against cool sky without declaring a winner. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. Frank Xavier Leyendecker gives 44.5% of the composition to a single #F5EDDB - a decisive chromatic anchor. The most saturated colour, #6E4727, is reserved to 4.0% of the surface, where it acts as a focal punctuation. From deepest dark to palest light, the palette traverses 68 units of the value scale - a span that creates natural depth. Frank Xavier Leyendecker's palette 4 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.