Sumi palette
Icy Prairie
Dark anchor, working middle, light release: #731400, #ac341b, #cb5138, #d26a54, #f1866e form a monochromatic sumi set with somewhere to stand at every lightness. Made for dashboards where status colors must survive color-vision differences. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#731400
#ac341b
#cb5138
#d26a54
#f1866e
The generator opens with #731400 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.