Sumi palette
Grape Inn
From #9f0d34 ink through #cd4a5c, #ed6776, #f3808a to #ffaaaf light, Grape Inn is a tetradic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#9f0d34
#cd4a5c
#ed6776
#f3808a
#ffaaaf
The generator opens with #9f0d34 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.