Jewel palette
Calico Fen
Five jewel stops with room to breathe — #004c58 grounds, #007789 and #3292a5 do the talking, #55a0af softens, #71bccc lifts. The complementary 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
#004c58
#007789
#3292a5
#55a0af
#71bccc
The generator opens with #004c58 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.