Petrichor palette
Steely Clearing
From #498cc5 ink through #0396b1, #009b91, #3bb2ce to #37b8ad light, Steely Clearing is a monochromatic progression that holds together at any size. Use it for book covers that read at thumbnail size.
skypetrichorfive-stop
#498cc5
#0396b1
#009b91
#3bb2ce
#37b8ad
The generator opens with #498cc5 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.