Sumi palette
Parchment Shrine
Five sumi stops with room to breathe — #8c2136 grounds, #b8505d and #d76b77 do the talking, #df828a softens, #fe9ea5 lifts. The tetradic bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#8c2136
#b8505d
#d76b77
#df828a
#fe9ea5
The generator opens with #8c2136 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.