Frost palette
Fennel Brook
From #004856 ink through #007387, #318ea3, #539cad to #6fb8ca light, Fennel Brook is a monochromatic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
cyanfrostfive-stophigh-contrast
#004856
#007387
#318ea3
#539cad
#6fb8ca
The generator opens with #004856 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.