Monochrome palette
Polar Hollow
Five stops tuned to sit together without fighting — #236300 ink anchors the set, #8dd874 opens it up, and #389100, #55ad31, #71ba57 cross the middle in a complementary arrangement. Polar Hollow suits newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA for large text.
greenmonochromefive-stop
#236300
#389100
#55ad31
#71ba57
#8dd874
The generator opens with #236300 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.