Is Blue Warden decent for leveling?

I'm solo leveling a Warden right now, taking my time and smelling the roses - trying to complete a lot of Deeds along the way. I found it too easy at first so I upped the difficulty to Fearless. But now that I've hit 30, I'm getting bashed left and right. Even with up to date gear, I'm having trouble with my Red spec Warden - mostly with elites who are starting to have adds. Feels like my survivability has dropped a lot recently.

So I'm wondering if Blue spec Warden is decent for soloing? I know it's a tank spec so I expect I'd be able to survive better but that's about all I know about it - would I do acceptable DPS to kill stuff without taking too long?