Retro palette
Vintage Bazaar
Five retro stops with room to breathe — #295da9 grounds, #5588d4 and #70a4f2 do the talking, #87b4f8 softens, #b3d2ff lifts. The tetradic bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skyretrofive-stop
#295da9
#5588d4
#70a4f2
#87b4f8
#b3d2ff
The generator opens with #295da9 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.