Retro palette
Cobalt Bookshop
Five retro stops with room to breathe — #a04940 grounds, #7057a2 and #627006 do the talking, #007582 softens, #be6459 lifts. The tetradic bones keep it coherent across event posters that compete with a wall of other posters.
redretrofive-stop
#a04940
#7057a2
#627006
#007582
#be6459
The generator opens with #a04940 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.