What architectural colleges can get into with a rank of 6800 in Jee main paper 2?
As per your percentile and previous year cutoff, the colleges you get in b.arch are:-
Om Dayal Group of institution
IIT Kharagpur
IIT Roorkee
With assumption that you get a similar rank in JEE Advanced 2019.
To know more about your chances of getting other colleges check out the college predictor link below:
https://engineering.careers360.com/jee-main-college-predictor