Monochrome palette
Rocky Cabin
From #005565 ink through #008098, #349cb4, #59a9be to #76c6dc light, Rocky Cabin 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.
cyanmonochromefive-stop
#005565
#008098
#349cb4
#59a9be
#76c6dc
The generator opens with #005565 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.