Sumi palette
Sorrel Deck
From #7e1c00 ink through #b83b1b, #d75839, #de7157 to #fd8e72 light, Sorrel Deck is a triadic progression that holds together at any size. Use it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#7e1c00
#b83b1b
#d75839
#de7157
#fd8e72
The generator opens with #7e1c00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.