Sumi palette
Harbor Delta
Dark anchor, working middle, light release: #751e00, #b53400, #d4522a, #db6c4c, #fa8867 form a split-complementary sumi set with somewhere to stand at every lightness. Made for flower-shop wraps and delivery van livery together. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#751e00
#b53400
#d4522a
#db6c4c
#fa8867
The generator opens with #751e00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.