Sumi palette
Soft Hollow
Five sumi stops with room to breathe — #7f1f0f grounds, #ab4d3c and #c96856 do the talking, #d17d6d softens, #f09988 lifts. The split-complementary 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
#7f1f0f
#ab4d3c
#c96856
#d17d6d
#f09988
The generator opens with #7f1f0f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.