Petrichor palette
Perennial Fjord
Dark anchor, working middle, light release: #00545c, #00808b, #349ca7, #59a9b2, #76c6cf form a monochromatic petrichor set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanpetrichorfive-stop
#00545c
#00808b
#349ca7
#59a9b2
#76c6cf
The generator opens with #00545c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.