Blue Hour palette
Topaz Mill
From #004660 ink through #007096, #308bb2, #5299bb to #6eb6d8 light, Topaz Mill 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.
cyanbluehourfive-stophigh-contrast
#004660
#007096
#308bb2
#5299bb
#6eb6d8
The generator opens with #004660 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.