Petrichor palette
Satin Library
Satin Library runs #3085ac through #008c94, #2a8e74, #37a8b0 to #4baa8f in five measured steps, the tetradic structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size.
cyanpetrichorfive-stop
#3085ac
#008c94
#2a8e74
#37a8b0
#4baa8f
The generator opens with #3085ac as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.