Blue Hour palette
Oyster Abbey
Oyster Abbey runs #3f6a9f through #007392, #007778, #318eae to #1c9494 in five measured steps, the complementary structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size.
cyanbluehourfive-stop
#3f6a9f
#007392
#007778
#318eae
#1c9494
The generator opens with #3f6a9f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.