Sumi palette
Restful Bookshop
Five sumi stops with room to breathe — #9b3b41 grounds, #c7676a and #e68285 do the talking, #ee9899 softens, #ffbcbb 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 for large text.
redsumifive-stop
#9b3b41
#c7676a
#e68285
#ee9899
#ffbcbb
The generator opens with #9b3b41 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.