Opera palette
Nectar Bluff
Dark anchor, working middle, light release: #00426e, #046aaa, #3085c7, #5195cd, #6db1eb form a tetradic opera set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skyoperafive-stophigh-contrast
#00426e
#046aaa
#3085c7
#5195cd
#6db1eb
The generator opens with #00426e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.