Blue Hour palette
Pearl Square
Pearl Square runs #01457e through #376ea7, #5289c4, #6a98cb to #85b5e9 in five measured steps, the split-complementary structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skybluehourfive-stophigh-contrast
#01457e
#376ea7
#5289c4
#6a98cb
#85b5e9
The generator opens with #01457e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.