Monochrome palette
Halcyon Archive
From #00531a ink through #00812d, #329d48, #56a962 to #72c67d light, Halcyon Archive is a split-complementary progression that holds together at any size. Use it for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA for large text.
greenmonochromefive-stop
#00531a
#00812d
#329d48
#56a962
#72c67d
The generator opens with #00531a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.