Opera palette
Crocus Fen
From #00639c ink through #148ed9, #3fabf8, #65bafc to #a3d5ff light, Crocus Fen is a split-complementary 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
#00639c
#148ed9
#3fabf8
#65bafc
#a3d5ff
The generator opens with #00639c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.