Blue Hour palette
Glacier Reef
Dark anchor, working middle, light release: #004a78, #0073b6, #318fd4, #559ed9, #71bbf7 form a tetradic blue hour set with somewhere to stand at every lightness. Made for music artwork with loud darks and a glowing accent. The darkest and lightest stops clear AA as a text pair.
skybluehourfive-stophigh-contrast
#004a78
#0073b6
#318fd4
#559ed9
#71bbf7
The generator opens with #004a78 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.