Storm palette
Opal Grove
Dark anchor, working middle, light release: #004e68, #00789e, #3293bb, #56a2c3, #73bee1 form a tetradic storm 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.
cyanstormfive-stop
#004e68
#00789e
#3293bb
#56a2c3
#73bee1
The generator opens with #004e68 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.