Sumi palette
River Alley
River Alley runs #ab604c through #c27560, #2b9cb4, #e0907b to #4eb8d1 in five measured steps, the split-complementary structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size.
redsumifive-stop
#ab604c
#c27560
#2b9cb4
#e0907b
#4eb8d1
The generator opens with #ab604c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.