So basically, I've rendered a scene, and it looked rather dull than what the viewport showed me. Not knowing what exactly caused the problem, I opened up a new blend file and checked to see if my base setup was free of this problem, turns out it wasn't.
Seems the white gets ever so slightly greyish and it's very very annoying. I don't know what could possibly be wrong.
Tried to reset my startup file, only to find out, my startup file was the default! What do I do!