Jewel palette
Calico Lighthouse
Five jewel stops with room to breathe — #005360 grounds, #007f91 and #349bad do the talking, #59a8b8 softens, #76c5d5 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.
cyanjewelfive-stop
#005360
#007f91
#349bad
#59a8b8
#76c5d5
The generator opens with #005360 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.