While orange and other citrus hues may have been spring and summer’s It colors, for fall and winter things are taking a much more somber note. A deep cobalt blue is going to be the shade for fall ’11, reminiscent of Yves Klein blue and post-World War II art. A close cousin to neutral navy, this is one of the most forgiving It colors we’ve seen in a while. We’re imagining pairing Yves Klein blue with other shades of blue for a beautiful monochrome look, or with black and cream for a classic taste, or as a backdrop to pops of red or neon. So wear a little or wear a lot—you’re sure to look fabulous.

Thakoon, Imaxtree

Karen Walker, Imaxtree

Derek Lam, Imaxtree

Jason Wu, Imaxtree

Anna Sui, Imaxtree

Balenciaga, Imaxtree

Matthew Williamson, Imaxtree

Peter Som, Imaxtree

Diane von Furstenberg, Imaxtree

Zac Posen, Imaxtree

Oscar de la Renta, Imaxtree