On the night of the final Hermès performed last in the running order, following Belgium. Clad in a striking all-pink oufit, she gave a powerful performance of the traditional Eurovision-style big ballad. Observers had noted that while there were several relatively strong songs in the 1983 line-up, it was likely to be a closely fought contest as no one song stood out as an obvious winner. "Si la vie est cadeau" got off to a slow start in the voting when Norway and the United Kingdom, voting second and third, both failed to award the song any points at all. They proved however to be the only two juries of the night to snub the Luxembourgian song completely, and by the time six juries had voted "Si la vie est cadeau" had taken over the lead, which it held throughout the rest of the voting. At the close "Si la vie est cadeau" had picked up 142 points (including six maximum 12 points votes from France, Greece, Israel, Italy, Portugal and Yugoslavia), winning the contest by a 6-point margin over runners-up Israel. The Luxembourgian jury awarded its 12 points to Germany.
"Si la vie est cadeau" was the twelfth French-language winner in 28 contests; however only two French-language songs have won since, the last in 1988.