Bauhaus palette
Hazy Reef
From #004651 ink through #007081, #308b9c, #5298a7 to #6eb5c4 light, Hazy Reef 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.
cyanbauhausfive-stophigh-contrast
#004651
#007081
#308b9c
#5298a7
#6eb5c4
The generator opens with #004651 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.