Storm palette
Ebony Clearing
From #396e9d ink through #00768d, #007a73, #3191a9 to #2d968e light, Ebony Clearing is a analogous progression that holds together at any size. Use it for book covers that read at thumbnail size.
skystormfive-stop
#396e9d
#00768d
#007a73
#3191a9
#2d968e
The generator opens with #396e9d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.