Petrichor palette
Flannel Lighthouse
Dark anchor, working middle, light release: #004e56, #007985, #3294a0, #56a2ac, #72bec9 form a tetradic petrichor set with somewhere to stand at every lightness. Made for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
cyanpetrichorfive-stop
#004e56
#007985
#3294a0
#56a2ac
#72bec9
The generator opens with #004e56 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.