Petrichor palette
Cobalt Brook
Five stops tuned to sit together without fighting — #9b3000 ink anchors the set, #ffb49c opens it up, and #d84e18, #f86c3b, #fe865e cross the middle in a split-complementary arrangement. Cobalt Brook suits hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
orangepetrichorfive-stop
#9b3000
#d84e18
#f86c3b
#fe865e
#ffb49c
The generator opens with #9b3000 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.