Sumi palette
Obsidian Brook
Five stops tuned to sit together without fighting — #9b2700 ink anchors the set, #0095ae opens it up, and #bc3100, #00778c, #dc502b cross the middle in a split-complementary arrangement. Obsidian Brook suits national-park posters with layered mountain silhouettes.
redsumifive-stop
#9b2700
#bc3100
#00778c
#dc502b
#0095ae
The generator opens with #9b2700 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.