Monochrome palette
Rustic Estuary
From #005f8f ink through #138aca, #3da6e8, #63b5ee to #92d1ff light, Rustic 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.
skymonochromefive-stop
#005f8f
#138aca
#3da6e8
#63b5ee
#92d1ff
The generator opens with #005f8f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.