Blue Hour palette
Rustic Lane
From #004889 ink through #2570c0, #438cde, #609ce3 to #7db9ff light, Rustic Lane is a tetradic 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
#004889
#2570c0
#438cde
#609ce3
#7db9ff
The generator opens with #004889 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.