Sumi palette
Indigo Lagoon
Dark anchor, working middle, light release: #9f543c, #5f64a8, #277e54, #bc6f56, #469a6e form a split-complementary sumi set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size.
tealsumifive-stop
#9f543c
#5f64a8
#277e54
#bc6f56
#469a6e
The generator opens with #9f543c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.