The high-key values of Arthur Rackham give it an effulgent, almost bleached quality. Arthur Rackham tilts toward cool - blues and silver-greys carry the structural weight. Mid-saturation across the board: the palette has colour character without chromatic excess. The most saturated colour, #8A6135, is reserved to 5.1% of the surface, where it acts as a focal punctuation. Spanning 51 units on the value axis, the palette achieves the balance between tonal flatness and fragmentation. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. Arthur Rackham's palette 4 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.