Petrichor palette
Herbal Reef
Herbal Reef runs #00505b through #007b8b, #3396a7, #57a4b2 to #73c0cf in five measured steps, the analogous structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanpetrichorfive-stop
#00505b
#007b8b
#3396a7
#57a4b2
#73c0cf
The generator opens with #00505b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.