Sumi palette
Luminous Lane
Five sumi stops with room to breathe — #853142 grounds, #9c4555 and #007571 do the talking, #ba606e softens, #00938e lifts. The split-complementary bones keep it coherent across book covers that read at thumbnail size.
redsumifive-stop
#853142
#9c4555
#007571
#ba606e
#00938e
The generator opens with #853142 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.