Blue Hour palette
Plum Dune
Dark anchor, working middle, light release: #2e69a1, #5b93cb, #76afe9, #8ebff0, #b8dbff form a monochromatic blue hour set with somewhere to stand at every lightness. Made for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#2e69a1
#5b93cb
#76afe9
#8ebff0
#b8dbff
The generator opens with #2e69a1 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.