At which Grand Slam tournament are matches traditionally played on blue hard courts since 2005?

US Open

Since 2005, the US Open has featured blue hard courts, a decision made to improve ball visibility for players and spectators. This change has not only strengthened the visual identity of the US Open but also enhanced the viewing experience on television and online. Held in New York, the US Open is renowned for its electric atmosphere and thrilling night matches under the city lights. The introduction of blue courts has become an iconic feature of the tournament, adding to the unique ambiance that defines the US Open among the Grand Slam tournaments.