Noir palette
Foggy Dune
From #964c5e ink through #007388, #2c784e, #b36678 to #499367 light, Foggy Dune is a analogous progression that holds together at any size. Use it for book covers that read at thumbnail size.
greennoirfive-stop
#964c5e
#007388
#2c784e
#b36678
#499367
The generator opens with #964c5e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.