Opera palette
Midnight Fjord
Five opera stops with room to breathe — #0069a6 grounds, #3e94d5 and #5cb0f3 do the talking, #7ac0f9 softens, #b1dbff lifts. The analogous bones keep it coherent across event posters that compete with a wall of other posters. The darkest and lightest stops clear AA for large text.
skyoperafive-stop
#0069a6
#3e94d5
#5cb0f3
#7ac0f9
#b1dbff
The generator opens with #0069a6 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.