Sumi palette
Restful Square
Dark anchor, working middle, light release: #9b3719, #c76448, #e68063, #ee957c, #ffb9a4 form a tetradic sumi set with somewhere to stand at every lightness. Made for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#9b3719
#c76448
#e68063
#ee957c
#ffb9a4
The generator opens with #9b3719 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.