Mid-key values give Frantisek Kupka its characteristic quietness - nothing blazes, nothing disappears. Frantisek Kupka tilts toward cool - blues and silver-greys carry the structural weight. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. #474914 functions as the palette's exclamation mark: highest chroma, lowest percentage (7.6%). The value range of 52 units sits in the comfortable middle: enough depth, enough light, neither extreme. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. This is palette 10 of Frantisek Kupka's sequence - a single chapter in a chromatic story told across many works.