Sumi palette
Mustard Dune
Dark anchor, working middle, light release: #801900, #bb381a, #db5639, #e17056, #ff8d73 form a triadic sumi set with somewhere to stand at every lightness. Made for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#801900
#bb381a
#db5639
#e17056
#ff8d73
The generator opens with #801900 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.