Retro palette
Lotus Brook
Five retro stops with room to breathe — #90173f grounds, #a83152 and #00736d do the talking, #c74e6b softens, #009189 lifts. The monochromatic bones keep it coherent across event posters that compete with a wall of other posters.
redretrofive-stop
#90173f
#a83152
#00736d
#c74e6b
#009189
The generator opens with #90173f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.