Acid palette
Earthen Plaza
From #004e4b ink through #007a76, #329591, #56a29e to #72bfba light, Earthen Plaza is a analogous progression that holds together at any size. Use it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA as a text pair.
cyanacidfive-stophigh-contrast
#004e4b
#007a76
#329591
#56a29e
#72bfba
The generator opens with #004e4b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.