Retro palette
Herbal Oasis
From #9c0e3d ink through #b42d50, #007874, #d34c69 to #009691 light, Herbal Oasis is a analogous progression that holds together at any size. Use it for event posters that compete with a wall of other posters.
pinkretrofive-stop
#9c0e3d
#b42d50
#007874
#d34c69
#009691
The generator opens with #9c0e3d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.