Opera palette
Overcast Cellar
Five stops tuned to sit together without fighting — #00577f ink anchors the set, #84c8f4 opens it up, and #2981b1, #499dce, #67abd6 cross the middle in a tetradic arrangement. Overcast Cellar suits museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA for large text.
skyoperafive-stop
#00577f
#2981b1
#499dce
#67abd6
#84c8f4
The generator opens with #00577f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.