Retro palette
Halcyon Heath
From #00488c ink through #2f71bd, #4b8ddb, #669de0 to #81b9fe light, Halcyon Heath is a tetradic progression that holds together at any size. Use it for flower-shop wraps and delivery van livery together. The darkest and lightest stops clear AA for large text.
skyretrofive-stop
#00488c
#2f71bd
#4b8ddb
#669de0
#81b9fe
The generator opens with #00488c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.