Monochrome palette
Misty Abbey
From #005c66 ink through #008897, #36a4b3, #5db1be to #7acedb light, Misty Abbey 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.
cyanmonochromefive-stop
#005c66
#008897
#36a4b3
#5db1be
#7acedb
The generator opens with #005c66 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.