Jewel palette
Halcyon Plaza
From #005a2c ink through #368451, #53a06b, #6dad7f to #89c99a light, Halcyon Plaza is a split-complementary progression that holds together at any size. Use it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
greenjewelfive-stop
#005a2c
#368451
#53a06b
#6dad7f
#89c99a
The generator opens with #005a2c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.