Blue Hour palette
Dusky Cellar
From #005584 ink through #007fc1, #349bdf, #5aaae4 to #7cc7ff light, Dusky Cellar is a split-complementary progression that holds together at any size. Use it for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#005584
#007fc1
#349bdf
#5aaae4
#7cc7ff
The generator opens with #005584 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.