Tropical palette
Maple Abbey
From #005458 ink through #008086, #349ca1, #59a9ae to #76c5ca light, Maple 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.
cyantropicalfive-stop
#005458
#008086
#349ca1
#59a9ae
#76c5ca
The generator opens with #005458 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.