According to manicurist Kim Truong, who frequently works with Bieber and shapes her signature look, the Rhode founder specifically requested a deep, dark, rich brown color for her European trip. To achieve the exact look, Truong custom mixed the perfect shade for the star, combining Chaun Legend Gel Polish in Knock on Wood—a deep, grounding dark brown—with a subtle hint of the brand’s Bite Me, a warmer and slightly lighter brown shade. When blended together, the polishes create a true, multi-dimensional brown. It is a color that is not so dark that it reads as almost black, but rather a melty, luscious chocolate hue that captures the essence of autumn.
Bieber clearly seems ready for sweater season and cooler weather, as this marks her second consecutive cozy color choice in a matter of weeks. Just a short while ago, she celebrated a personal anniversary sporting a soft taupe manicure that similarly signaled her transition away from bright summer brights into sophisticated, muted neutrals.

Not only does Bieber’s latest manicure make onlookers want to skip their morning coffee in favor of a comforting mug of hot cocoa, but it also takes a direct aesthetic cue from her refreshed brunette hair color. Her locks are now a few shades darker than they were during the sun-drenched summer months, a seasonal shift courtesy of her longtime colorist, Matt Rez. The rich, glossy transformation complements her skin tone and frames her face with a warmer, deeper warmth that transitions effortlessly from the runways of Paris to everyday street style.
Furthermore, Bieber is far from the only star flirting with the dark brunette side this season, signaling a broader beauty industry trend toward deep, moody hues as temperatures drop. Off Campus star Ella Bright recently debuted a much darker hair color at the 2026 VMAs, turning heads on the red carpet with her dramatic seasonal refresh. Meanwhile, actress Dakota Johnson has also recently deepened her signature brunette locks, proving that rich, dark hair is a perennial favorite for autumn and winter red carpets alike.
When it comes to fall color trends—whether you are looking to refresh your hair color or switch up your manicure—you really can’t go wrong with a classic, grounded shade like chocolate brown. By pairing her custom-mixed nails with her darkened tresses and sharp tailoring in Paris, Hailey Bieber has once again set the tone for seasonal beauty, offering a masterclass in how to transition your look seamlessly from summer to the heart of autumn.