Blue Hour palette
Coral Bluff
Dark anchor, working middle, light release: #004c60, #007694, #3191b0, #559fba, #71bcd7 form a complementary 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.
cyanbluehourfive-stop
#004c60
#007694
#3191b0
#559fba
#71bcd7
The generator opens with #004c60 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.