Blue Hour palette
Mulberry Cabin
Dark anchor, working middle, light release: #006074, #008ca8, #37a8c5, #5fb6ce, #7cd3ec form a tetradic blue hour set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanbluehourfive-stop
#006074
#008ca8
#37a8c5
#5fb6ce
#7cd3ec
The generator opens with #006074 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.