Ocean palette
Lantern Brook
From #006370 ink through #0090a2, #38acbe, #61bac9 to #7ed7e7 light, Lantern Brook is a analogous progression that holds together at any size. Use it for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
cyanoceanfive-stop
#006370
#0090a2
#38acbe
#61bac9
#7ed7e7
The generator opens with #006370 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.