Petrichor palette
Opal Inn
Five petrichor stops with room to breathe — #004c4a grounds, #007875 and #329390 do the talking, #55a09d softens, #71bdb9 lifts. The tetradic bones keep it coherent across national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA as a text pair.
cyanpetrichorfive-stophigh-contrast
#004c4a
#007875
#329390
#55a09d
#71bdb9
The generator opens with #004c4a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.