Sumi palette
Cozy Caravan
Five sumi stops with room to breathe — #781100 grounds, #b92405 and #d9462c do the talking, #df634c softens, #ff8067 lifts. The analogous bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#781100
#b92405
#d9462c
#df634c
#ff8067
The generator opens with #781100 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.