Petrichor palette
Fennel Boulevard
Five stops tuned to sit together without fighting — #006b74 ink anchors the set, #82dfea opens it up, and #0098a5, #3ab4c1, #64c2cd cross the middle in a tetradic arrangement. Fennel Boulevard suits book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanpetrichorfive-stop
#006b74
#0098a5
#3ab4c1
#64c2cd
#82dfea
The generator opens with #006b74 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.