Blue Hour palette
Walnut Pier
From #7e6ee1 ink through #3581e5, #0090b8, #579eff to #00adde light, Walnut Pier is a tetradic progression that holds together at any size. Use it for book covers that read at thumbnail size.
bluebluehourfive-stop
#7e6ee1
#3581e5
#0090b8
#579eff
#00adde
The generator opens with #7e6ee1 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.