I first fell in love with Yves Klein Blue at a Zara in Milan. I bought the sweetest pair of blue flats in this unique hue when i was there in 2006. I love pairing my flats with neutral tones or my Saturday uniform of jeans and a JCrew tshirt. When I bought these Zara flats I had no idea that their color was called Yves Klein blue and I just referred to them as cobalt. Regardless of what you call this color, it is striking and will be a major trend for Fall 2011. Here is how some designers infused this blue into their fall runway shows.


Thakoon
Loving this plaid jacket with the pop of blue...so unexpected


Thakoon
Neutrals paired with a bold blue


Matthew Williamson
I am loving this gorgeous black and blue skirt's unique details


Matthew Williamson
Gorgeous blue print and details...love him


3.1 Phillip Lim
Pairing athletic shapes and blue with an unexpected brown detail


Alexander Wang
Tough while still completely chic and feminine


DVF
The showstopping blue sequin dress...stunning

{all photos from style.com}