M6's history dates back to 1986 when CLT announced that they are going to launch a new terrestrial television channel in France called RTL6. However, the name and its logo are currently unknown.
On 28 January 1986, RTL6 was resurrected as TV6 France and replaced its pre-launch logo by the channel's first logo. With it, the channel was launched on 1 March 1986, but its first logo were short-lived.
On 1 March 1987, TV6 France was closed down and were replaced by a new channel called M6. Its first logo was a 3D-animated "M" coloured blue with a red "6" appear to the right in the middle of it. This logo is also short-lived.
On 1 June 1987, M6 slightly remodified its network logo by making the red "6" become more abstract with the blue "M" grows more bigger thus the "Metropole Television" is removed from the logo, but the logo are still short-lived too.
On 1 September 1987, M6 introduced a new logo which was not short-lived, as the channel replaced its original logo in favour of a new logo which consists of an abstract "M" coloured grey with the red "6" is now placed on the top at the middle of the grey "M" by having a new set of idents and also a new theme music to the set.