Opera palette
Leaden Shrine
From #005683 ink through #0080c0, #349cde, #5babe4 to #7cc8ff light, Leaden Shrine 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.
skyoperafive-stop
#005683
#0080c0
#349cde
#5babe4
#7cc8ff
The generator opens with #005683 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.