Green and blue.
More specifically emerald green and sapphire blue – a colour combination that has me doing double takes.
This colour combination really hit my radar during the holidays when I realized that the Christmas outdoor lights decorating neighbour homes that I really liked were the green/blue combos.
On the visible spectrum green and blue exist naturally side by side. (Cool photo I took playing with a beam of light and a reflective CD)
In nature the peacock pairs green and blue together for a magnificent spectacle.
Not existing naturally but green and blue are truly a colour sensation seen in these 2 fabulous hair designs from JFK Salon, U.K. http://www.hairbyjfk.com/ 
STRIKING is how I would define this room decorated in emerald green and sapphire blue.
And naturally what woman wouldn’t swoon for Elizabeth Taylor’s emerald and sapphire necklace (created by Bulgari) draped around their neck!
Emerald green and sapphire blue paired together are naturally beautiful – wouldn’t you agree?
MODMISSY 
Yes, these two colors really do compliment each other!
the colours of Mephistopheles in Goethe’s version of Faust.
Blue and Green should never be seen, except in the washing machine.
So wrong!
I love them together!
Ha ha ha!!!
I agree about this combination, Emerald is also Pantone colour 2013, it was a close tie between blue and emerald, I personally love both