Sumi palette
Obsidian Harbor
Dark anchor, working middle, light release: #98310e, #c45f41, #e37b5c, #ea9076, #ffb29c form a split-complementary sumi set with somewhere to stand at every lightness. Made for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#98310e
#c45f41
#e37b5c
#ea9076
#ffb29c
The generator opens with #98310e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.