Surf palette
Fennel Inn
From #004750 ink through #00727f, #308d9a, #529aa6 to #6fb7c2 light, Fennel Inn 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.
cyansurffive-stophigh-contrast
#004750
#00727f
#308d9a
#529aa6
#6fb7c2
The generator opens with #004750 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.