Frost palette
Sundew Marsh
From #006366 ink through #009094, #38acb0, #60b9bc to #7ed6d9 light, Sundew Marsh is a analogous progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanfrostfive-stop
#006366
#009094
#38acb0
#60b9bc
#7ed6d9
The generator opens with #006366 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.