Sumi palette
Maritime Dune
Dark anchor, working middle, light release: #732000, #b23700, #d1542a, #d86d4c, #f78a67 form a split-complementary sumi set with somewhere to stand at every lightness. Made for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#732000
#b23700
#d1542a
#d86d4c
#f78a67
The generator opens with #732000 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.