Storybook palette
Perennial Delta
From #004f60 ink through #007a92, #3395ae, #57a3b8 to #73c0d5 light, Perennial Delta is a analogous progression that holds together at any size. Use it for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA for large text.
cyanstorybookfive-stop
#004f60
#007a92
#3395ae
#57a3b8
#73c0d5
The generator opens with #004f60 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.