Nebula palette
Walnut Plaza
Five stops tuned to sit together without fighting — #007261 ink anchors the set, #85e8d2 opens it up, and #00a18a, #3cbea5, #67cbb5 cross the middle in a tetradic arrangement. Walnut Plaza suits national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
tealnebulafive-stop
#007261
#00a18a
#3cbea5
#67cbb5
#85e8d2
The generator opens with #007261 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.