Sumi palette
Vale Mill
Dark anchor, working middle, light release: #ac273b, #da5a64, #fa777e, #ff9095, #ffbfc0 form a tetradic sumi set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#ac273b
#da5a64
#fa777e
#ff9095
#ffbfc0
The generator opens with #ac273b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.