Sumi palette
Umber Dune
Dark anchor, working middle, light release: #91233c, #a93a4f, #007674, #c85668, #009491 form a triadic sumi set with somewhere to stand at every lightness. Made for newsletters where the header, links, and footers share one voice.
redsumifive-stop
#91233c
#a93a4f
#007674
#c85668
#009491
The generator opens with #91233c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.