Blue Hour palette
Snowy Lodge
From #40669e ink through #007092, #007577, #308bae to #119295 light, Snowy Lodge is a complementary progression that holds together at any size. Use it for book covers that read at thumbnail size.
cyanbluehourfive-stop
#40669e
#007092
#007577
#308bae
#119295
The generator opens with #40669e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.