Petrichor palette
Calico Cellar
From #005963 ink through #008594, #35a1b0, #5baebb to #78cbd8 light, Calico Cellar 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
#005963
#008594
#35a1b0
#5baebb
#78cbd8
The generator opens with #005963 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.