Blue Hour palette
Coral Estuary
From #00488d ink through #1770cc, #398ceb, #599dee to #81baff light, Coral Estuary is a split-complementary 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.
skybluehourfive-stop
#00488d
#1770cc
#398ceb
#599dee
#81baff
The generator opens with #00488d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.