Petrichor palette
Marble Harbor
Marble Harbor runs #006063 through #008d91, #37a9ad, #5fb6b9 to #7cd3d6 in five measured steps, the monochromatic 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
#006063
#008d91
#37a9ad
#5fb6b9
#7cd3d6
The generator opens with #006063 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.