Sumi palette
River Estuary
Dark anchor, working middle, light release: #a6002d, #bf2740, #007b7e, #df4859, #00999d form a tetradic sumi set with somewhere to stand at every lightness. Made for newsletters where the header, links, and footers share one voice.
redsumifive-stop
#a6002d
#bf2740
#007b7e
#df4859
#00999d
The generator opens with #a6002d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.