PARIS — Riding a bright yellow bike to match his shiny leader’s jersey, defending champion Chris Froome won his fourth and most challenging Tour de France title on Sunday.

The 32-year-old Kenyan-born British rider finished 54 seconds ahead of Colombian Rigoberto Uran overall, the smallest margin of his wins.

“This Tour has been my toughest yet. I want to pay tribute to all riders for their sportsmanship,” Froome said. “We raced hard together, we suffered together.”

This was the third straight win for the Team Sky rider. His first in 2013 came the year after former teammate Bradley Wiggins sparked off an era of British dominance.

His margin of victory over Colombian Nairo Quintana in 2013 was by more than four minutes. Quintana pushed him much harder in 2015, finishing only 1:12 back, but Froome beat Frenchman Romain Bardet by 4:05 last year. Bardet was third this time.