Sumi palette
Sooty Porch
Five sumi stops with room to breathe — #8a2f3c grounds, #a1444f and #007676 do the talking, #bf5f68 softens, #009494 lifts. The tetradic bones keep it coherent across national-park posters with layered mountain silhouettes.
redsumifive-stop
#8a2f3c
#a1444f
#007676
#bf5f68
#009494
The generator opens with #8a2f3c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.