Sumi palette
Faraway Prairie
Dark anchor, working middle, light release: #a41f00, #d84d32, #f86b4e, #fe856c, #ffb4a3 form a tetradic sumi set with somewhere to stand at every lightness. Made for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#a41f00
#d84d32
#f86b4e
#fe856c
#ffb4a3
The generator opens with #a41f00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.