Retro palette
Crimson Courtyard
Five retro stops with room to breathe — #00538e grounds, #8c5600 and #0067ae do the talking, #af6d00 softens, #2d82cc lifts. The split-complementary bones keep it coherent across book covers that read at thumbnail size.
skyretrofive-stop
#00538e
#8c5600
#0067ae
#af6d00
#2d82cc
The generator opens with #00538e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.