Sumi palette
Olive Reef
From #9d4c1e ink through #6359a8, #007959, #bb673b to #059771 light, Olive Reef is a split-complementary progression that holds together at any size. Use it for event posters that compete with a wall of other posters.
orangesumifive-stop
#9d4c1e
#6359a8
#007959
#bb673b
#059771
The generator opens with #9d4c1e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.