One of the most popular anime with a girl with blue hair is "K-On!" This slice-of-life comedy follows the daily lives of five high school girls who join their school's light music club. The main character, Yui Hirasawa, has short blue hair and is the lead guitarist of the band. Her cheerful personality and love for music make her a lovable protagonist.1. "K-On!"
Next on our list is "Fairy Tail," a fantasy adventure anime that features several characters with blue hair, including Lucy Heartfilia. As a celestial wizard, Lucy's hair turns blue when she uses her magic. Throughout the series, she goes through various hairstyles, but her signature blue locks remain a constant reminder of her strength and determination.2. "Fairy Tail"
Known as one of the pioneers of the magical girl genre, "Sailor Moon" features a diverse group of girls, each with their unique powers and personalities. One of the main characters, Ami Mizuno, has long blue hair and transforms into Sailor Mercury, the guardian of water and wisdom. Her intelligence and kind heart make her a fan favorite among viewers.3. "Sailor Moon"
In "Blue Exorcist," the main character, Rin Okumura, discovers that he is the son of Satan and has inherited his father's powers. As a result, his hair turns a vibrant blue, which becomes a symbol of his inner strength and determination to defeat his demonic heritage. Rin's blue hair is also a contrast to his brother's red hair, representing their opposing sides.4. "Blue Exorcist"
Featuring a unique world where everything is determined by games, "No Game No Life" follows the adventures of siblings, Sora and Shiro. Shiro, the younger sister, has long blue hair and is a genius when it comes to playing games. Despite her young age, she proves to be a valuable asset to her brother, and her blue hair adds to her mysterious and alluring aura.5. "No Game No Life"
In "Kamisama Kiss," Nanami Momozono becomes a deity after inheriting a shrine from a fallen god. As a result, her hair turns a vibrant shade of blue, representing her newfound powers and responsibilities. Throughout the series, Nanami struggles to balance her human and divine sides, making her blue hair a physical reminder of her journey.6. "Kamisama Kiss"
"Kobayashi-san Chi no Maid Dragon" is a heartwarming comedy about a dragon named Tohru who becomes a maid for a human named Kobayashi. Tohru's hair is a beautiful shade of blue, and it changes depending on her mood. Her hair also has magical properties, and she can use it to transform into a human or a dragon, making her a unique and lovable character.7. "Kobayashi-san Chi no Maid Dragon"
Although not technically an anime series, "Kimi no Na wa" is a critically acclaimed anime movie that features a girl with blue hair named Mitsuha. Through a strange phenomenon, Mitsuha switches bodies with a boy named Taki, and they begin to communicate through notes. Mitsuha's blue hair becomes a symbol of their connection and the intertwining of their lives.8. "Kimi no Na wa"
In "Violet Evergarden," the main character is a former soldier who becomes an auto memories doll, writing letters for others. As a soldier, Violet had short, blonde hair, but after losing her arms in battle, her hair turns a beautiful shade of blue. Her blue hair symbolizes her transformation from a weapon to a person capable of feeling and expressing emotions.9. "Violet Evergarden"
Lastly, we have "K-On! The Movie," a continuation of the popular series where the girls go on a graduation trip to London. While in London, the main character, Yui, has her hair styled into long, curly blue locks, giving her a more mature and elegant appearance. This change in her appearance represents her growth as a character and the end of an era for the light music club.10. "K-On! The Movie"