Thanks for the question. 

Congratulations for 777 rank. 

You have high chances of getting following colleges - 

National Law School of India University, Bangalore

NALSAR University of Law, Hyderabad

National Law Institute University, Bhopal

WB National University of Juridical Sciences, Kolkata

National Law University, Jodhpur

Gujarat National Law University, Gandhinagar

Hidayatullah National Law University, Raipur

Rajiv Gandhi National University of Law, Patiala

All the best