Petrichor palette
Perennial Boulevard
From #006770 ink through #0094a1, #39b0bd, #62bec9 to #80dbe6 light, Perennial Boulevard 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
#006770
#0094a1
#39b0bd
#62bec9
#80dbe6
The generator opens with #006770 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.