After dueling his former apprentice on Mustafar, Obi-Wan Kenobi took Anakin's lightsaber and kept it on Tatooine for nearly two decades. He gave it to Luke Skywalker, who lost it when Darth Vader struck off his son's hand in Cloud City.
In Obi-Wan Kenobi, he forsakes his weapon as a reflection of his own lack of connection to the Force. Once he accepts he needs it ("this weapon is your life", remember), he is able to walk the Jedi path again.
After attaining the rank of Jedi Master, Obi-Wan built a third saber, also with a blue plasma blade. He used this saber until he sacrificed his life aboard the Death Star, allowing himself to be struck down by Darth Vader so Luke Skywalker could escape.
He is known for carrying a blue lightsaber, but there is one canonical instance of Obi-Wan using a red lightsaber. In the season four finale of the 2008 animated series “Star Wars: The Clone Wars,” titled “Revenge,” Maul and Savage Opress overpower Kenobi and…
After he lost his second lightsaber prior to the First Battle of Geonosis, Jedi Obi-Wan Kenobi, who was promoted to the title of Jedi Master as well, built a new lightsaber for himself during the ensuing Clone Wars between the Galactic Republic and Confederacy of Independent Systems.
It's because of his mastery of sorsue (sorry for my bad spelling.) Well if you want the ACTUAL reason it because in the original 3 films the Green Light Sabre didn't exist until after Obi Wans death.
In the Star Wars universe, it is also known as Luke's lightsaber or Rey's lightsaber, depending on the time frame in question. Here on Earth, it is known as the “Graflex” lightsaber, in honor of the brand-name camera whose parts were used to construct the hilt that was seen in A New Hope.
The weapon had a kyber crystal at its heart, and emitted a yellow-colored plasma blade when ignited. The emitter matrix on Rey's weapon featured a rotating gear-like mechanism, which caused the emitter of the lightsaber to open up and allow the plasma blade through.
Obi-Wan believed Anakin had died there, and by taking the lightsaber he was attempting to honor his former Padawan's legacy by giving it to his son. This second lightsaber would have symbolized so much to Obi-Wan: it represented all his regrets, as well as all his hopes that Luke could be what Anakin was not.
Skywalker lightsaber
After dueling his former apprentice on Mustafar, Obi-Wan Kenobi took Anakin's lightsaber and kept it on Tatooine for nearly two decades. He gave it to Luke Skywalker, who lost it when Darth Vader struck off his son's hand in Cloud City.
The way of the Jedi
Rey wields the lightsaber of Anakin and Luke Skywalker as her own.
Star Wars: Shadow of the Sith novel, set before The Force Awakens, confirmed Luke Skywalker once used Anakin's deadliest lightsaber move. The following contains spoilers from Star Wars: Shadow of the Sith. In Star Wars lore, it's no secret Anakin Skywalker's one of the best at wielding a lightsaber.
As the Third Sister, she was highly ambitious. Thus, her mind was set on tracking down Jedi Master Obi-Wan Kenobi, with her fellow Inquisitors assuming she hoped his capture would gain her Darth Vader's favor and therefore improve her station.
Luke Skywalker's lightsaber was changed from blue to green when they were filming because it was difficult to see. This became apparent during act one of Return of the Jedi when the battle on Jabba the Hutt's sail barge was shot during the day. The blue lightsaber blended in with the clear blue sky.
The reason why the Third Sister hates Obi-Wan Kenobi so much is because she was a Jedi initiate when Order 66 happened. On that infamous day, Reva was training with her fellow Jedi younglings in the Jedi Temple of Coruscant.
Leia Organa's lightsaber was a blue-bladed lightsaber powered by a kyber crystal in the core of the hilt. It was silver and copper in color and featured mother-of-pearl inlays. Organa's weapon was considered a work of art, having an elegant symmetry with silver and gold hues that evoke to her upbringing on Alderaan.
Purple. Only one person in canon wields a purple blade: the Jedi Council's Mace Windu. He uses it to decapitate the deadly bounty hunter Jango Fett in Attack of the Clones and to deflect Darth Sidious' Force Lightning with it -- disfiguring his face -- in Revenge of the Sith.
The lightsaber's amethyst color was chosen by the actor portraying Windu, Samuel L. Jackson, who wanted a purple lightsaber because he was "the second baddest Jedi in the universe" and so he could find himself among the many Jedi featured in the Battle of Geonosis scene.
Kylo Ren's crossguard lightsaber is an ancient design that recalls weapons seen millennia ago during the Great Scourge of Malachor.
After Yoda's death in 4 ABY, the lightsaber with its accompanying storage box ended up in the possession of Yoda's last Jedi apprentice, Luke Skywalker. In 9 ABY, Skywalker offered the saber to Grogu, a young member of Yoda's species; who was being trained by Skywalker at his Jedi academy on the Outer Rim planet Ossus.
Why is Luke's lightsaber green when Anakin's was blue? Luke Skywalker's lightsaber was changed from blue to green when they were filming because it was difficult to see. This became apparent during act one of Return of the Jedi when the battle on Jabba the Hutt's sail barge was shot during the day.
Qui-Gon Jinn's simple yet elegant lightsaber served him in many conflicts. The maverick Jedi designed his green-bladed saber to imitate the weapon of his master, Count Dooku; Qui-Gon's saber, in turn, inspired the design of Obi-Wan Kenobi's first Jedi weapon.
Blue lightsabers have been wielded by a number of famous Jedi including Obi-Wan Kenobi, Anakin Skywalker, and Ki-Adi-Mundi.
Known survivors. It was said that fewer than one hundred Jedi—approximately one percent of the entire Order—survived Order 66.