Sumi palette
Umber Gazebo
Dark anchor, working middle, light release: #7a0300, #ac3629, #cb5343, #d26b5c, #f18777 form a triadic 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 as a text pair.
redsumifive-stophigh-contrast
#7a0300
#ac3629
#cb5343
#d26b5c
#f18777
The generator opens with #7a0300 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.