You can wear a broad-stripe tie, like this: http://www.samhober.com/grenadine-grossa-stripe-silk-ties/powder-blue-and-brown-stripes-on-midnight-blue-grenadine-tie-3.html
I hope that jacket is part of a suit, otherwise you might have difficulty finding a pair of pants to coordinate. I am not sure I agree with mimo on gray flannels, as the jacket appears to be mid gray also, which will not provide enough contrast.
I do agree that a light blue shirt would be good.
SHoot, it's not really gray, it is more tan and I was going to wear navy pants w/ brown shoes, brown belt. I don't have a solid light blue shirt (yes, I'm not kidding) I do have gray flannels though, and I'm going to where teh weather is colder (50-60f)
I have almost that exact same tie, except it's missoni, grabbed it just in case, I do have a very light gray tone on tone shirt. This was too last minute, should've put together days before my trip, but I'm new to dressing nice, and while I've worn suits before, I've never worried about it. I just know enough to know that that tie and jacket wasn't working. Thanks for your help, luckily I do have a huge tie collection, so I'm going to grab a few extras. Will post the morning of that outfit, you guys can rate (or berate) me on it