Blue Hour palette
Fern Prairie
Dark anchor, working middle, light release: #004f66, #007a9b, #3395b7, #57a3c1, #73c0de form a split-complementary blue hour set with somewhere to stand at every lightness. Made for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA for large text.
cyanbluehourfive-stop
#004f66
#007a9b
#3395b7
#57a3c1
#73c0de
The generator opens with #004f66 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.