Sumi palette
Copper Caravan
Dark anchor, working middle, light release: #7d2000, #ba3a0e, #d95832, #e07152, #ff8e6e form a tetradic 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
#7d2000
#ba3a0e
#d95832
#e07152
#ff8e6e
The generator opens with #7d2000 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.