Blue Hour palette
Denim Bookshop
Dark anchor, working middle, light release: #004554, #006f86, #308aa2, #5198ac, #6db4c9 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 as a text pair.
cyanbluehourfive-stophigh-contrast
#004554
#006f86
#308aa2
#5198ac
#6db4c9
The generator opens with #004554 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.