Sumi palette
Harbor Bluff
Five sumi stops with room to breathe — #a20034 grounds, #d0465c and #f06376 do the talking, #f67e8a softens, #ffaab0 lifts. The triadic bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#a20034
#d0465c
#f06376
#f67e8a
#ffaab0
The generator opens with #a20034 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.