Tropical palette
Halcyon Manor
From #bb3136 ink through #0075a1, #007e66, #db5050 to #009c80 light, Halcyon Manor is a complementary progression that holds together at any size. Use it for book covers that read at thumbnail size.
redtropicalfive-stop
#bb3136
#0075a1
#007e66
#db5050
#009c80
The generator opens with #bb3136 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.