Sumi palette
Fiery Plaza
From #8f1f00 ink through #cb3d1a, #eb5c3a, #f1775a to #ff9f88 light, Fiery Plaza is a monochromatic progression that holds together at any size. Use it for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#8f1f00
#cb3d1a
#eb5c3a
#f1775a
#ff9f88
The generator opens with #8f1f00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.