Pick your card

So I was looking at the new TF skin on the PBE and it got me wondering... Do the symbols on the cards mean something? Because I've noticed how he only shoots out the red cards with his Q and only teleports on his yellow cards with his ult so I started thinking that maybe the red symbol means "Blood" or "Violence" in some kind of asian language, the yellow one "Knowledge" or something like that and I have no clue for the blue one :^P Honestly I am legit curious and I hope a Rioter can answer me Thanks in advance for wasting your time for me, I know it's a stupid question and I'm probably wrong anyway :^/