Arc-en-ciel literally translates to "rainbow". It's a beautiful and evocative word that is central to the song's theme and title.
In the song, Gabrielle Goulet uses the rainbow as a metaphor for her feelings and her beloved. Each color of the rainbow represents a different aspect of her love and the person she's singing about, making it a unique and memorable way to express deep affection.
Arc-en-ciel (which means “rainbow” in French) is Gabrielle Goulet’s joyful love letter to someone who lights up her world. The lyrics follow a simple yet magical storyline: rain stops, the sun peeks out, and a rainbow arches across the sky just as she walks toward her special person. Every step, every flutter of excitement, and every gentle kiss turns the natural spectacle above them into a personal celebration of their connection.
Goulet then playfully assigns each color of the rainbow to a trait she adores in her partner: blue for their eyes, pink for their smile, green for carefree summer days together, purple for their shy side, red for the beating heart, and orange for the fiery passion they share. In short, the rainbow becomes a vibrant checklist of everything she loves. Whenever she looks up at those bright bands of color, she is reminded that her greatest treasure waits “at the end” of it—right there beside her.