Blue Hour palette
Lunar Hollow
Lunar Hollow runs #005674 through #0081ac, #349dc9, #5aabd1 to #77c8ef in five measured steps, the tetradic structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanbluehourfive-stop
#005674
#0081ac
#349dc9
#5aabd1
#77c8ef
The generator opens with #005674 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.