Blue Hour palette
Thistled Patio
Dark anchor, working middle, light release: #004c94, #3376c3, #4f92e1, #6aa2e6, #8abfff form a analogous 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
#004c94
#3376c3
#4f92e1
#6aa2e6
#8abfff
The generator opens with #004c94 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.