Sumi palette
Vernal Pavilion
Five sumi stops with room to breathe — #711e00 grounds, #ab3b15 and #ca5734 do the talking, #d16f52 softens, #f08b6c lifts. The triadic bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#711e00
#ab3b15
#ca5734
#d16f52
#f08b6c
The generator opens with #711e00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.