Blue Hour palette
Faded Mill
Dark anchor, working middle, light release: #00486f, #0071aa, #308cc7, #539bce, #70b8ec form a tetradic 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 as a text pair.
skybluehourfive-stophigh-contrast
#00486f
#0071aa
#308cc7
#539bce
#70b8ec
The generator opens with #00486f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.