Retro palette
Steely Square
Five stops tuned to sit together without fighting — #7f0013 ink anchors the set, #f28b85 opens it up, and #ad3b3b, #cc5754, #d36f6a cross the middle in a complementary arrangement. Steely Square suits hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA as a text pair.
redretrofive-stophigh-contrast
#7f0013
#ad3b3b
#cc5754
#d36f6a
#f28b85
The generator opens with #7f0013 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.