Blue Hour palette
Snowy Heath
Dark anchor, working middle, light release: #00518c, #1b7ac7, #3e96e5, #5fa6ea, #85c2ff form a triadic blue hour set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#00518c
#1b7ac7
#3e96e5
#5fa6ea
#85c2ff
The generator opens with #00518c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.