Disco palette
Halcyon Dune
From #004090 ink through #2668c6, #4284e4, #5d95e8 to #7eb2ff light, Halcyon Dune is a 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 as a text pair.
skydiscofive-stophigh-contrast
#004090
#2668c6
#4284e4
#5d95e8
#7eb2ff
The generator opens with #004090 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.