Blue Hour palette
Crackling Glade
Dark anchor, working middle, light release: #004559, #006f8d, #308aa9, #5298b2, #6eb4cf form a split-complementary blue hour set with somewhere to stand at every lightness. Made for newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA as a text pair.
cyanbluehourfive-stophigh-contrast
#004559
#006f8d
#308aa9
#5298b2
#6eb4cf
The generator opens with #004559 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.