Blue Hour palette
Lingering Library
From #00455c ink through #006f91, #308aad, #5298b6 to #6eb4d3 light, Lingering Library is a triadic progression that holds together at any size. Use it for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA as a text pair.
cyanbluehourfive-stophigh-contrast
#00455c
#006f91
#308aad
#5298b6
#6eb4d3
The generator opens with #00455c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.