Blue Hour palette
Umber Bluff
Dark anchor, working middle, light release: #29659b, #578fc5, #72abe3, #8abbea, #afd7ff form a complementary blue hour set with somewhere to stand at every lightness. Made for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#29659b
#578fc5
#72abe3
#8abbea
#afd7ff
The generator opens with #29659b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.