Taxis in Paris do not have a special badge, they are normal cars of all makes and colors, the only thing that differentiates them is the sign on the roof.
They can be taken at any intersection or next to the metro stations.
They don’t usually take more than three passengers per taxi and the drivers have a reputation for not being very nice to tourists.
The minimum service costs €6.20, so it is cheaper to use public transport.
Rates are more expensive on weekends and at night