Hello Sir ,

For addmission in architecture colleges , 50% marks are required in boards class 12th and 50% marks in NATA / JEE MAINS PAPER 2. 

Some colleges take a ratio of both as 50:50. 

There are reservations for state board students in the particular state about 50-70% , then for OBC , ST and SC as well some 20-40%. 

You can surely get some colleges. You can check the link below and predict the best college for yourself since you haven't provided the jee mains marks. 

https://engineering.careers360.com/jee-main-architecture-college-predictor

Hope it helps. All the best.