Sumi palette
Sienna Pavilion
Five sumi stops with room to breathe — #b02a41 grounds, #c84254 and #008a8c do the talking, #e85f6e softens, #00a8aa lifts. The analogous bones keep it coherent across book covers that read at thumbnail size.
redsumifive-stop
#b02a41
#c84254
#008a8c
#e85f6e
#00a8aa
The generator opens with #b02a41 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.