Opera palette
Dewey Dune
Dark anchor, working middle, light release: #006790, #2692c5, #49aee3, #6dbdea, #98d9ff form a tetradic 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 for large text.
cyanoperafive-stop
#006790
#2692c5
#49aee3
#6dbdea
#98d9ff
The generator opens with #006790 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.