Blue Hour palette
Cinder Lodge
Dark anchor, working middle, light release: #004a57, #007588, #3190a4, #549eae, #70bacb form a split-complementary 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 as a text pair.
cyanbluehourfive-stophigh-contrast
#004a57
#007588
#3190a4
#549eae
#70bacb
The generator opens with #004a57 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.