Blue Hour palette
Leaden Dairy
Dark anchor, working middle, light release: #00579c, #0480df, #359dfe, #5eadff, #99caff form a split-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.
skybluehourfive-stop
#00579c
#0480df
#359dfe
#5eadff
#99caff
The generator opens with #00579c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.