Sumi palette
Opal Heath
Five sumi stops with room to breathe — #711f00 grounds, #a64221 and #c45d3d do the talking, #cc7358 softens, #eb8f73 lifts. The analogous bones keep it coherent across newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#711f00
#a64221
#c45d3d
#cc7358
#eb8f73
The generator opens with #711f00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.