Sumi palette
River Square
Five stops tuned to sit together without fighting — #90213e ink anchors the set, #00938e opens it up, and #a83851, #007571, #c7546a cross the middle in a tetradic arrangement. River Square suits wellness apps where the interface must feel calm, not clinical.
redsumifive-stop
#90213e
#a83851
#007571
#c7546a
#00938e
The generator opens with #90213e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.