Acid palette
Cobalt Grove
From #004846 ink through #007371, #308e8c, #529b99 to #6fb7b5 light, Cobalt Grove 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.
cyanacidfive-stophigh-contrast
#004846
#007371
#308e8c
#529b99
#6fb7b5
The generator opens with #004846 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.