Sumi palette
Umber Cove
From #8e3f00 ink through #c76019, #e67c3c, #ed925f to #ffb58e light, Umber Cove is a split-complementary progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
orangesumifive-stop
#8e3f00
#c76019
#e67c3c
#ed925f
#ffb58e
The generator opens with #8e3f00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.