Sumi palette
Autumn Alley
Dark anchor, working middle, light release: #820000, #b4382c, #d35547, #da6e60, #f98a7b form a tetradic sumi set with somewhere to stand at every lightness. Made for newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#820000
#b4382c
#d35547
#da6e60
#f98a7b
The generator opens with #820000 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.