Retro palette
Poppy Bluff
From #ad3527 ink through #006ca0, #007667, #cc5242 to #009481 light, Poppy Bluff is a complementary progression that holds together at any size. Use it for event posters that compete with a wall of other posters.
redretrofive-stop
#ad3527
#006ca0
#007667
#cc5242
#009481
The generator opens with #ad3527 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.