Monochrome palette
Tidal Marsh
From #005a64 ink through #008694, #36a2b0, #5cafbb to #79ccd8 light, Tidal Marsh 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.
cyanmonochromefive-stop
#005a64
#008694
#36a2b0
#5cafbb
#79ccd8
The generator opens with #005a64 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.