Retro palette
Cordovan Dune
From #6b2700 ink through #9c4b24, #ba663f, #c27a5a to #e09574 light, Cordovan Dune 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 as a text pair.
orangeretrofive-stophigh-contrast
#6b2700
#9c4b24
#ba663f
#c27a5a
#e09574
The generator opens with #6b2700 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.