Jewel palette
Polar Heath
Five jewel stops with room to breathe — #004d34 grounds, #007a55 and #31956f do the talking, #54a280 softens, #71bf9b lifts. The split-complementary 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.
tealjewelfive-stophigh-contrast
#004d34
#007a55
#31956f
#54a280
#71bf9b
The generator opens with #004d34 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.