Sumi palette
Glacier Oasis
Five sumi stops with room to breathe — #742913 grounds, #9f533e and #bc6e58 do the talking, #c6816e softens, #e49d89 lifts. The monochromatic 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
#742913
#9f533e
#bc6e58
#c6816e
#e49d89
The generator opens with #742913 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.