Frost palette
Russet Courtyard
Five frost stops with room to breathe — #3e689d grounds, #007190 and #007576 do the talking, #308cac softens, #1b9293 lifts. The complementary bones keep it coherent across book covers that read at thumbnail size.
cyanfrostfive-stop
#3e689d
#007190
#007576
#308cac
#1b9293
The generator opens with #3e689d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.