Retro palette
Calico Ridge
Dark anchor, working middle, light release: #8470c4, #587ecb, #008bbe, #729ae9, #35a8dc form a split-complementary retro set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size.
skyretrofive-stop
#8470c4
#587ecb
#008bbe
#729ae9
#35a8dc
The generator opens with #8470c4 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.