Blurtit is a family site so I can't give you a link to what I assume you are looking for as "Blue film" is commonly a name used for pornographic videos, often of amateur quality and sometimes filmed without the knowledge of the participants.
In India, distributing or creating pornographic material is illegal and as a result there has developed an underground scene to make this material available often in the same places you would be able to buy pirated DVDs and suchlike.
Apparently, a lot of films originate from the south; the state of Kerala, home to the Malayalam people, has gained the ironic title of Mollywood. Also in the south, Tamil Nadu known as "Tollywood" and Tamil Blue Film is also widely sought after.
You may find streaming Indian Blue Movies online but here is not really the place to start looking.
In India, distributing or creating pornographic material is illegal and as a result there has developed an underground scene to make this material available often in the same places you would be able to buy pirated DVDs and suchlike.
Apparently, a lot of films originate from the south; the state of Kerala, home to the Malayalam people, has gained the ironic title of Mollywood. Also in the south, Tamil Nadu known as "Tollywood" and Tamil Blue Film is also widely sought after.
You may find streaming Indian Blue Movies online but here is not really the place to start looking.