Sumi palette
Icy Harbor
Five sumi stops with room to breathe — #791c00 grounds, #b93101 and #d9502b do the talking, #df6b4d softens, #ff8768 lifts. The triadic bones keep it coherent across event posters that compete with a wall of other posters. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#791c00
#b93101
#d9502b
#df6b4d
#ff8768
The generator opens with #791c00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.