Petrichor palette
Sooty Ridge
From #006876 ink through #0095a9, #39b1c6, #63bfd0 to #81dcee light, Sooty Ridge is a tetradic 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 for large text.
cyanpetrichorfive-stop
#006876
#0095a9
#39b1c6
#63bfd0
#81dcee
The generator opens with #006876 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.