Where can I find a Lacoste shirt?

I am trying to find a Lacoste shirt for my boyfriend. We found a color that we really like at Macy's but they didn't have his size and the closest Macy's that does is over an hour away. I looked for it online but I don't know if they have the right color b/c at Macy's it says Marine Blue and at the Lacoste website it says there is a Mariner Blue but it looks different than the color in the store. Is there any other store besides Macy's that sells them?