Sumi palette
Copper Library
A quiet five-stop sumi arc with a confident middle — #810029 carries the weight and #f68b95 carries the air, with #b03a4e, #cf5667 and #d66f7a bridging in tetradic formation. Built for dashboards where status colors must survive color-vision differences. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#810029
#b03a4e
#cf5667
#d66f7a
#f68b95
The generator opens with #810029 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.