Sumi palette
Heather Bookshop
Dark anchor, working middle, light release: #a72f00, #c1431b, #008199, #e0603b, #009ebb form a split-complementary sumi set with somewhere to stand at every lightness. Made for national-park posters with layered mountain silhouettes.
redsumifive-stop
#a72f00
#c1431b
#008199
#e0603b
#009ebb
The generator opens with #a72f00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.