Monochrome palette
Calico Kiosk
Five monochrome stops with room to breathe — #2d7400 grounds, #5a9e3f and #75bb5b do the talking, #8dc878 softens, #a9e694 lifts. The tetradic bones keep it coherent across national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
greenmonochromefive-stop
#2d7400
#5a9e3f
#75bb5b
#8dc878
#a9e694
The generator opens with #2d7400 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.