Opera palette
Umber Gazebo
From #00578c ink through #0080cb, #349ce9, #5bacee to #88c8ff light, Umber Gazebo is a tetradic progression that holds together at any size. Use it for indie game interfaces with a strong day-night rhythm. The darkest and lightest stops clear AA for large text.
skyoperafive-stop
#00578c
#0080cb
#349ce9
#5bacee
#88c8ff
The generator opens with #00578c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.