Aurora palette
Sage Heath
From #3f3ea7 ink through #646ad1, #7d86f0, #8f98f3 to #aeb8ff light, Sage Heath 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.
blueaurorafive-stophigh-contrast
#3f3ea7
#646ad1
#7d86f0
#8f98f3
#aeb8ff
The generator opens with #3f3ea7 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.