Opera palette
Lantern Hollow
Five opera stops with room to breathe — #00678d grounds, #0093c7 and #39afe5 do the talking, #63beec softens, #93d9ff lifts. The split-complementary bones keep it coherent across national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
cyanoperafive-stop
#00678d
#0093c7
#39afe5
#63beec
#93d9ff
The generator opens with #00678d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.