Opera palette
Brisk Mesa
Dark anchor, working middle, light release: #004570, #296da1, #4688be, #6097c5, #7cb3e3 form a tetradic opera set with somewhere to stand at every lightness. Made for event posters that compete with a wall of other posters. The darkest and lightest stops clear AA as a text pair.
skyoperafive-stophigh-contrast
#004570
#296da1
#4688be
#6097c5
#7cb3e3
The generator opens with #004570 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.