Blue Hour palette
Obsidian Brook
From #4463a0 ink through #006e96, #00737a, #2f89b2 to #009099 light, Obsidian Brook is a complementary progression that holds together at any size. Use it for hotel key cards and lobby signage in one system.
cyanbluehourfive-stop
#4463a0
#006e96
#00737a
#2f89b2
#009099
The generator opens with #4463a0 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.