Blue Hour palette
Umber Fen
Dark anchor, working middle, light release: #00576d, #0082a2, #359ebf, #5bacc8, #78c8e5 form a analogous 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
#00576d
#0082a2
#359ebf
#5bacc8
#78c8e5
The generator opens with #00576d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.