Opera palette
Overcast Reef
From #004a7b ink through #0e73b7, #368fd5, #589eda to #74bbf9 light, Overcast Reef 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 as a text pair.
skyoperafive-stophigh-contrast
#004a7b
#0e73b7
#368fd5
#589eda
#74bbf9
The generator opens with #004a7b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.