Petrichor palette
Pumice Lagoon
From #9f69b2 ink through #4f83ca, #8b8619, #6a9fe8 to #a6a23d light, Pumice Lagoon is a analogous progression that holds together at any size. Use it for event posters that compete with a wall of other posters.
skypetrichorfive-stop
#9f69b2
#4f83ca
#8b8619
#6a9fe8
#a6a23d
The generator opens with #9f69b2 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.