Blue Hour palette
Mercurial Foundry
Dark anchor, working middle, light release: #004f79, #0078b5, #3294d3, #57a3d9, #73bff7 form a tetradic blue hour set with somewhere to stand at every lightness. Made for tea packaging where the flavor color does the talking. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#004f79
#0078b5
#3294d3
#57a3d9
#73bff7
The generator opens with #004f79 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.