Sumi palette
Powdery Granary
Five sumi stops with room to breathe — #7a0027 grounds, #b71d44 and #d7415d do the talking, #dd5f71 softens, #fd7b8c lifts. The tetradic 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
#7a0027
#b71d44
#d7415d
#dd5f71
#fd7b8c
The generator opens with #7a0027 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.