Frost palette
Tawny Fen
From #006374 ink through #008fa8, #38abc5, #60b9cf to #7ed6ec light, Tawny Fen 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.
cyanfrostfive-stop
#006374
#008fa8
#38abc5
#60b9cf
#7ed6ec
The generator opens with #006374 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.