Frost palette
Tranquil Harbor
From #007486 ink through #af6351, #008aa0, #cd7e6b to #37a6bc light, Tranquil Harbor is a complementary progression that holds together at any size. Use it for book covers that read at thumbnail size.
redfrostfive-stop
#007486
#af6351
#008aa0
#cd7e6b
#37a6bc
The generator opens with #007486 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.