Retro palette
Sundew Marsh
From #a31625 ink through #d14f50, #f16c6a, #f78581 to #ffb0ac light, Sundew Marsh is a analogous progression that holds together at any size. Use it for event posters that compete with a wall of other posters. The darkest and lightest stops clear AA for large text.
redretrofive-stop
#a31625
#d14f50
#f16c6a
#f78581
#ffb0ac
The generator opens with #a31625 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.