If my wife and I both have brown eyes, what are the odds of our kids being blue?

Probably somewhere in the vicinity of 25%. It's perfectly logical for brown eyed parents to have a baby with blue eyes. Now if you both have blue eyes and your baby ends up with brown eyes, that could mean something...

Blue eye colour is caused by a very common gene mutation that most babies are born with, over time the colour can develope or stay blue, to even suggest its becuse the child has a different father is stupid and very doubtful, there would be other signs like looks

There's no way to say the exact odds, genetics from generations well past come into play.

But really, if you think your wife had an affair, that speaks of a much deeper issue and you should seek therapy.

if one of your parents have blue eyes its a possibility. My parents both have brown eyes and I have blue eyes, because my grandpa has blue eyes. Check to see if anyone in ur family has blue eyes (even an aunt or uncle) and that could explain why your child has blue eyes.

most babies are born with blue eyes. but the odds depend on what color eyes your parents have. Blue eyes are a dominant trait so it is very possible it is your child

Just about all babies are born with blue eyes. You never noticed that?

The actual eye color takes a while to come out.

I really wouldn't be worried or accuse her over an eye color. Genetics can do weird things. Especially if its an ancestors gene. Anythings possible.

All Caucasian newborns have blue eyes.

What color eyes do your parents and your wife's parents have? Also, baby's eyes change color after a while.