I have following type of count data.
A and B both 230
Here is a post which discusses Venn diagram from list of clusters and co-occuring factors.
For easy solution use package venneuler:
require(venneuler) v <- venneuler(c(A=450, B=1800, "A&B"=230)) plot(v)
For more advanced and customized solutions check package VennDiagram.