Petrichor palette
Umber Bookshop
Dark anchor, working middle, light release: #005258, #007e86, #3399a1, #58a7ad, #75c3ca form a monochromatic petrichor set with somewhere to stand at every lightness. Made for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
cyanpetrichorfive-stop
#005258
#007e86
#3399a1
#58a7ad
#75c3ca
The generator opens with #005258 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.