Hello Aspirant,

Hope you are doing well, As you've mentioned that your engineering ranking  in kcet 2021 is 27650, with this rank your chances of getting your cse branch  in top engineering colleges are low, But yes you can get cse seat in good college, Wait & try for all rounds. Here are the colleges where you have good chances of getting cse seat through kcet:

Dayananda Sagar University, Bangalore - B.Tech Computer science & technology

KS Institute of Technology, Bangalore -  B E Computer science & engineering

Sai Vidya Institute of Technology, Bangalore - B E Computer science & engineering

Mangalore Institute of Technology and Engineering, Mangalore - B E Computer science & engineering

Cambridge Institute of Technology, Bangalore - B E Computer science & engineering

Atria Institute of Technology, Bangalore -  B E Computer science & engineering

The Oxford College of Engineering, Bangalore - B E Computer science & engineering

You can also predict your college based on rank for kcet 2021 by using college predictor tool:

All the best!

Hope this helps you