Sumi palette
Grassy Inn
Dark anchor, working middle, light release: #8d2100, #b95137, #d86d52, #df836b, #fe9f86 form a analogous sumi set with somewhere to stand at every lightness. Made for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#8d2100
#b95137
#d86d52
#df836b
#fe9f86
The generator opens with #8d2100 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.