College Flag
The colors of the College flag are Blue and Gold. The Gold colour on the Blue flag significantly reflects the glory of  St.Antony's College, which resembles  the golden rising Sun in the Eastern horizon. This radiates hope and enlightenment, for the future generation of this Island, which is surrounded by the Blue Lagoon.

It is also interpreted that St.Antony,s College always shares it's Brotherhood as a Catholic missionary educational institution with St.Patrick's College Jaffna , which is a long living centenarian private school , in sharing it's colour Gold.