Ocean palette
Pink Saloon
From #006369 ink through #975453, #007980, #b46e6c to #32949b light, Pink Saloon is a analogous progression that holds together at any size. Use it for book covers that read at thumbnail size.
cyanoceanfive-stop
#006369
#975453
#007980
#b46e6c
#32949b
The generator opens with #006369 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.