Taken by Leon Busy between 1914 and 1917, the images were selected by historian Emmanuel Poisson and ethnologist Dinh Trong Hieu from an archive of more than 1,500 photos.
Busy was commissioned to take the pictures by banker and charity activist Albert Kahn, who wanted to build an archive of colour photos depicting all nations in the world.
The photo archive now forms part of the Albert Kahn Museum in Boulogne – Billancourt, France.
The exhibition, Ha Noi Sac Mau (The Colour of Ha Noi), is divided into two sections: "Normal Life – Crafts and Society" and "Environment and Beliefs".
The photos were completed through a colour photography process known as Autochrome Lumiere, invented in 1903 by the Lumiere brothers.
Their clear colours reveal the beauty in traditional costumes, daily utensils and rural landscapes such as rice fields ready to be harvested.
Michel Bock, a representative from the Ile-de-France region, said the exhibition would help make the Year of Viet Nam in France in 2014 successful and strengthen friendship and co-operation between the people of Ile-de-France and Ha Noi.
Some photos at the exhibition: