Opera palette
Crimson Bluff
Dark anchor, working middle, light release: #00487b, #3671a5, #518cc2, #6a9bca, #85b8e7 form a monochromatic opera set with somewhere to stand at every lightness. Made for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA as a text pair.
skyoperafive-stophigh-contrast
#00487b
#3671a5
#518cc2
#6a9bca
#85b8e7
The generator opens with #00487b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.