Ocean palette
Yonder Dune
From #005450 ink through #00807a, #349b95, #58a9a3 to #75c5bf light, Yonder Dune is a analogous progression that holds together at any size. Use it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
cyanoceanfive-stop
#005450
#00807a
#349b95
#58a9a3
#75c5bf
The generator opens with #005450 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.