Blue Hour palette
Seaside Cellar
Dark anchor, working middle, light release: #004970, #0072ab, #308dc8, #549ccf, #70b9ed 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
#004970
#0072ab
#308dc8
#549ccf
#70b9ed
The generator opens with #004970 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.