Blue Sargent is a character from the young adult fantasy series called The Raven Cycle, written by Maggie Stiefvater. She is the only non-psychic member of her family, which consists of women with strong supernatural abilities. Blue is known for her striking blue hair and her unique ability to amplify the psychic powers of others. In the series, Blue becomes involved with a group of boys from Aglionby Academy, particularly Gansey, who is on a quest to find a legendary Welsh king. Her character is central to the themes of friendship, love, and the search for identity throughout the story.