Sumi palette
Kelp Orchard
Five sumi stops with room to breathe — #722000 grounds, #af3a0a and #ce572f do the talking, #d56f4e softens, #f48b69 lifts. The triadic bones keep it coherent across national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#722000
#af3a0a
#ce572f
#d56f4e
#f48b69
The generator opens with #722000 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.