Two more, at home to Italy and England, will secure their first title since 2007 and first grand slam since 2006.
"I had the feeling that we'd lost sight of the match, maybe even before the end of the first half," Lievremont said.
"Things were very excitable in the changing room, everyone was talking and we lost all our coherence at every level."
The game's momentum shifted when Palisson picked off a floated James Hook pass to run 60 metres and score under the posts.
With their scrum looking solid, France then enjoyed a spell on top and two penalties from Parra edged them further clear.
|France held off a second-half Wales fightback at The Millennium Stadium in Cardiff [AFP]
Wales ran a desperate attack at the end of the half, but flyhalf Trinh-Duc anticipated Shane Williams' pass out of the tackle for another easy score.
After two Jones three-pointers, a terrific pass by Williams set Halfpenny free and he showed great pace to score in the corner and restore home hopes.
Jones converted well from the touchline and with Parra sin-binned for a deliberate knock-on the Welsh fans began to believe another sensational comeback could be on the cards.
Against Scotland two weeks ago they Welsh trailed by 10 points with five minutes remaining and somehow won the match and they had further chances on Friday to close the gap.
However, poor decisions and poor handling meant they failed to register a point while France were down to 14 men and Michalak stretched the lead back to 13 points.
There was still time for Williams to mark his 33rd birthday with his 50th Welsh try, another superb jinking effort which Jones again converted.
Two weeks ago, Scotland inexplicably failed to kick the ball into touch with their final restart, enabling Wales to snatch their famous win, but France had no hesitation in doing so to ensure the victory.
For Warren Gatland, the Welsh team coach, it was an opportunity missed.
"We put France under some pressure and we had a chance to win it but gave away a couple of critical late penalties," he said.
"We tried to play a lot of rugby - France never really threatened our line all match, they got two intercepts and kicked four penalties but never really got in our 22 and put us under pressure.
"There was one team trying to play some rugby, but we have just got to stop pushing the self-destruct button.
"I think they will win the grand slam but that was a game for us to win today."
Lievremont said: "We played a great team. The score flattered us at half-time. The two penalties we scored in the second half won us the match, because otherwise our goose would have been cooked."
The tournament continues on Saturday when Italy take on Scotland in Rome (1330 GMT) and England play champions Ireland at Twickenham (1600).