Blue Hour palette
Autumn Delta
Autumn Delta runs #00406d through #0668aa, #3083c7, #5193cd to #6cafeb in five measured steps, the tetradic structure keeping every neighbor honest. Reach for 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
#00406d
#0668aa
#3083c7
#5193cd
#6cafeb
The generator opens with #00406d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.