Petrichor palette
Mossy Brook
From #004847 ink through #007372, #308e8d, #529b9a to #6fb7b6 light, Mossy Brook is a complementary 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.
cyanpetrichorfive-stophigh-contrast
#004847
#007372
#308e8d
#529b9a
#6fb7b6
The generator opens with #004847 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.