Sumi palette
Crisp Cabin
Five sumi stops with room to breathe — #8f0006 grounds, #bc4238 and #db5f52 do the talking, #e2776b softens, #ff9588 lifts. The triadic 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
#8f0006
#bc4238
#db5f52
#e2776b
#ff9588
The generator opens with #8f0006 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.