Retro palette
North Bluff
From #006697 ink through #2e91cb, #4fade9, #70bcf0 to #a0d8ff light, North Bluff is a triadic 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
#006697
#2e91cb
#4fade9
#70bcf0
#a0d8ff
The generator opens with #006697 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.