Acid palette
Perennial Kiln
From #004e4e ink through #007a7a, #329595, #56a2a2 to #72bfbe light, Perennial Kiln is a tetradic 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
#004e4e
#007a7a
#329595
#56a2a2
#72bfbe
The generator opens with #004e4e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.