Petrichor palette
Mineral Estuary
Mineral Estuary runs #005251 through #007e7d, #339998, #58a7a5 to #74c3c1 in five measured steps, the tetradic 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
#005251
#007e7d
#339998
#58a7a5
#74c3c1
The generator opens with #005251 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.