Ocean palette
Herbal Beacon
From #004554 ink through #006f86, #308aa2, #5198ac to #6db4c9 light, Herbal Beacon is a analogous progression that holds together at any size. Use it for event posters that compete with a wall of other posters. The darkest and lightest stops clear AA as a text pair.
cyanoceanfive-stophigh-contrast
#004554
#006f86
#308aa2
#5198ac
#6db4c9
The generator opens with #004554 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.