Blue Hour palette
Halcyon Manor
From #005b95 ink through #3a85c2, #57a1e0, #73b0e6 to #95cdff light, Halcyon Manor 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.
skybluehourfive-stop
#005b95
#3a85c2
#57a1e0
#73b0e6
#95cdff
The generator opens with #005b95 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.