Retro palette
Halcyon Boulevard
Dark anchor, working middle, light release: #1d32aa, #4061d4, #587df3, #6d90f5, #91afff form a split-complementary retro set with somewhere to stand at every lightness. Made for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA as a text pair.
skyretrofive-stophigh-contrast
#1d32aa
#4061d4
#587df3
#6d90f5
#91afff
The generator opens with #1d32aa as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.