Blue Hour palette
Seafoam Prairie
Dark anchor, working middle, light release: #00548e, #117dcc, #3999ea, #5da9ef, #89c5ff form a tetradic blue hour set with somewhere to stand at every lightness. Made for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#00548e
#117dcc
#3999ea
#5da9ef
#89c5ff
The generator opens with #00548e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.