Jewel palette
Umber Crater
From #3a52ad ink through #617dd8, #7b99f7, #8faafb to #b6c9ff light, Umber Crater 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 for large text.
skyjewelfive-stop
#3a52ad
#617dd8
#7b99f7
#8faafb
#b6c9ff
The generator opens with #3a52ad as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.