Blonde Girl Reveals Her Cyan Camisole And Knickers On The Couch In The Living Room

There is a Final Fantasy VI character named Cyan Garamonde.
Inky, one of the four ghosts in Pac-Man, is a shade of cyan.
In Pokémon Gold and Silver, a city on a outcast island is named Cianwood City.
In The video game Star Wars: Knights of the Old Republic II: The Sith Lords, Cyan is the rarest color crystal- never appearing in a lightsaber that you are given and will never appear in a predetermined spot - the only way to get it is by a random crystal popping up.