Sumi palette
Tidal Foundry
Five stops tuned to sit together without fighting — #7e0004 ink anchors the set, #f3897c opens it up, and #ae382f, #cd5549, #d46d61 cross the middle in a monochromatic arrangement. Tidal Foundry suits national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#7e0004
#ae382f
#cd5549
#d46d61
#f3897c
The generator opens with #7e0004 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.