Petrichor palette
Brisk Oasis
From #00666f ink through #00939f, #39afbb, #62bdc7 to #7fdae4 light, Brisk Oasis is a tetradic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanpetrichorfive-stop
#00666f
#00939f
#39afbb
#62bdc7
#7fdae4
The generator opens with #00666f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.