Storybook palette
Fern Estuary
From #00515e ink through #007c8f, #3397ab, #57a5b6 to #74c2d2 light, Fern Estuary 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.
cyanstorybookfive-stop
#00515e
#007c8f
#3397ab
#57a5b6
#74c2d2
The generator opens with #00515e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.