Nebula palette
Marble Bluff
From #0067b7 ink through #2291f5, #63afff, #84bfff to #badbff light, Marble Bluff 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.
skynebulafive-stop
#0067b7
#2291f5
#63afff
#84bfff
#badbff
The generator opens with #0067b7 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.