Prairie palette
Peaty Lighthouse
From #005969 ink through #00859b, #35a1b7, #5caec2 to #79cbdf light, Peaty Lighthouse is a analogous progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanprairiefive-stop
#005969
#00859b
#35a1b7
#5caec2
#79cbdf
The generator opens with #005969 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.