Retro palette
Pine Library
From #c25314 ink through #7168d2, #009066, #e16f38 to #00af7d light, Pine Library is a analogous progression that holds together at any size. Use it for book covers that read at thumbnail size.
blueretrofive-stop
#c25314
#7168d2
#009066
#e16f38
#00af7d
The generator opens with #c25314 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.