Sumi palette
Leaden Square
Five sumi stops with room to breathe — #890016 grounds, #be3539 and #de5353 do the talking, #e46e6a softens, #ff8e89 lifts. The tetradic bones keep it coherent across flower-shop wraps and delivery van livery together. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#890016
#be3539
#de5353
#e46e6a
#ff8e89
The generator opens with #890016 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.