Doesn't look dead to me. Might be a tough shell to throw off. I have helped them get their shells off before. However, it is very easy to damage the cotyledons (the first couple of tiny leaves). If you damage those, you can set growth back a great deal, if it doesn't kill the seedling.

I'd wait a day or two more. Spritz the shell with water to soften it up a little too. If the shell is still there you may want to consider helping it. The way I do it is to use a safety pin or needle and gently *gently* try to get the shell off of it with the tip of the needle. I can't stress enough how careful you should be, especially if you don't have any other seedlings or plants. If all your eggs are in this basket, be extremely careful. It is generally doable though. I've only harmed one seedling, and I've probably helped a couple dozen seedlings pop their shells off. And even the one I did damage did survive, although it took it an extra couple of weeks to recover and get back to growing normally.
jamstigator Reviewed by jamstigator on . ¿The Shell Question? 12 days Well its been about more than a week and my seedling doesn't look that good :). Yeah and the shell isn't off yet. Is it dead? I had 65w 2700k light on the first ten days then two days ago I put a 65w 6500k. So I have a 65w 2700k and a 65w 6500k. This is how it looks. On the first picture you can see the crack on it. Rating: 5