Earthy palette
Gleaming Saloon
From #b5521e ink through #6c64c3, #008861, #d46e3d to #00a778 light, Gleaming Saloon is a analogous progression that holds together at any size. Use it for book covers that read at thumbnail size.
blueearthyfive-stop
#b5521e
#6c64c3
#008861
#d46e3d
#00a778
The generator opens with #b5521e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.