Retro palette
Fennel Reef
Five stops tuned to sit together without fighting — #004573 ink anchors the set, #70b4f0 opens it up, and #0d6daf, #3488cc, #5598d2 cross the middle in a triadic arrangement. Fennel Reef suits hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA as a text pair.
skyretrofive-stophigh-contrast
#004573
#0d6daf
#3488cc
#5598d2
#70b4f0
The generator opens with #004573 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.