In the anime and manga series "Naruto," the character Sasuke Uchiha wields a sword known as the Kusanagi Sword. The color of Sasuke's sword is silver or steel gray.

The Kusanagi Sword is a legendary weapon in the Naruto universe and is associated with the Uchiha clan. It has a straight, single-edged blade with a circular handguard and a hilt wrapped in bandages. The blade itself is typically depicted with a metallic silver or gray coloration.

Sasuke's possession of the Kusanagi Sword is significant in his character development and combat abilities. The sword is a symbol of his connection to his Uchiha heritage and serves as a powerful tool in his battles.