Petrichor palette
Steely Cellar
From #635600 ink through #907e00, #ac9a31, #b8a958 to #d5c674 light, Steely Cellar is a triadic progression that holds together at any size. Use it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
amberpetrichorfive-stop
#635600
#907e00
#ac9a31
#b8a958
#d5c674
The generator opens with #635600 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.