Sumi palette
Indigo Patio
From #a74c0b ink through #be6129, #008bb5, #dd7d47 to #00a8da light, Indigo Patio is a triadic progression that holds together at any size. Use it for book covers that read at thumbnail size.
orangesumifive-stop
#a74c0b
#be6129
#008bb5
#dd7d47
#00a8da
The generator opens with #a74c0b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.