Blue Hour palette
Plum Lane
From #003f73 ink through #2767a5, #4382c2, #5d91c9 to #78aee6 light, Plum Lane is a tetradic 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.
skybluehourfive-stophigh-contrast
#003f73
#2767a5
#4382c2
#5d91c9
#78aee6
The generator opens with #003f73 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.