Petrichor palette
Opal Foundry
From #8a3900 ink through #c75600, #e67230, #ed8956 to #ffad85 light, Opal Foundry is a tetradic progression that holds together at any size. Use it for bike-shop liveries that survive mud and sun. The darkest and lightest stops clear AA for large text.
orangepetrichorfive-stop
#8a3900
#c75600
#e67230
#ed8956
#ffad85
The generator opens with #8a3900 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.