Jewel palette
Sable Beacon
From #006895 ink through #0094d1, #39b1ef, #64c0f5 to #9fdaff light, Sable Beacon is a analogous progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skyjewelfive-stop
#006895
#0094d1
#39b1ef
#64c0f5
#9fdaff
The generator opens with #006895 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.