Sumi palette
Willow Deck
Dark anchor, working middle, light release: #a73201, #bf4922, #00829b, #de6540, #009fbe form a triadic sumi set with somewhere to stand at every lightness. Made for museum exhibition graphics with long sightlines.
redsumifive-stop
#a73201
#bf4922
#00829b
#de6540
#009fbe
The generator opens with #a73201 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.