Sumi palette
Snowy Boulevard
Five sumi stops with room to breathe — #7c0017 grounds, #b13138 and #d04f51 do the talking, #d76967 softens, #f78582 lifts. The tetradic 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
#7c0017
#b13138
#d04f51
#d76967
#f78582
The generator opens with #7c0017 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.