Sumi palette
Flint Square
Dark anchor, working middle, light release: #6e2237, #994c5d, #b66677, #c07a87, #de95a3 form a tetradic 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
#6e2237
#994c5d
#b66677
#c07a87
#de95a3
The generator opens with #6e2237 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.