Sumi palette
Walnut Cabin
From #9f5335 ink through #366ea8, #007b78, #bc6e4f to #009995 light, Walnut Cabin is a triadic progression that holds together at any size. Use it for book covers that read at thumbnail size.
orangesumifive-stop
#9f5335
#366ea8
#007b78
#bc6e4f
#009995
The generator opens with #9f5335 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.