Monochrome palette
Polar Garret
Five stops tuned to sit together without fighting — #155313 ink anchors the set, #8fc08a opens it up, and #437b3f, #5d9659, #73a46f cross the middle in a tetradic arrangement. Polar Garret suits newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA for large text.
greenmonochromefive-stop
#155313
#437b3f
#5d9659
#73a46f
#8fc08a
The generator opens with #155313 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.