Jewel palette
Vintage Courtyard
Five jewel stops with room to breathe — #004a54 grounds, #007583 and #31909e do the talking, #549eaa softens, #70bac6 lifts. The tetradic bones keep it coherent across event posters that compete with a wall of other posters. The darkest and lightest stops clear AA as a text pair.
cyanjewelfive-stophigh-contrast
#004a54
#007583
#31909e
#549eaa
#70bac6
The generator opens with #004a54 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.