Retro palette
Crimson Lighthouse
From #005c8a ink through #0087c6, #36a3e4, #5eb2ea to #88ceff light, Crimson Lighthouse is a tetradic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skyretrofive-stop
#005c8a
#0087c6
#36a3e4
#5eb2ea
#88ceff
The generator opens with #005c8a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.