Blue Hour palette
Copper Heath
Dark anchor, working middle, light release: #275d91, #946321, #3c72a7, #b07d3f, #578dc4 form a tetradic blue hour set with somewhere to stand at every lightness. Made for event posters that compete with a wall of other posters.
skybluehourfive-stop
#275d91
#946321
#3c72a7
#b07d3f
#578dc4
The generator opens with #275d91 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.