Acid palette
Plum Pier
Five stops tuned to sit together without fighting — #306c93 ink anchors the set, #379182 opens it up, and #007382, #107668, #318e9d cross the middle in a tetradic arrangement. Plum Pier suits book covers that read at thumbnail size.
skyacidfive-stop
#306c93
#007382
#107668
#318e9d
#379182
The generator opens with #306c93 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.