Retro palette
Restful Delta
From #2a4798 ink through #5171c2, #6a8de0, #7f9de5 to #9cbaff light, Restful Delta is a split-complementary progression that holds together at any size. Use it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
skyretrofive-stop
#2a4798
#5171c2
#6a8de0
#7f9de5
#9cbaff
The generator opens with #2a4798 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.