Blue Hour palette
Primrose Estuary
Dark anchor, working middle, light release: #005ca4, #0085e8, #43a2ff, #6ab3ff, #a3cfff 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
#005ca4
#0085e8
#43a2ff
#6ab3ff
#a3cfff
The generator opens with #005ca4 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.