Sanriocore is a fan-created internet aesthetic centered around the visual world, characters, and merchandise produced by the Japanese company Sanrio. The aesthetic emerged from the global popularity of kawaii culture and is characterized by a blend of cute, playful, and sometimes edgy styles that draw heavily from Y2K fashion . The aesthetic focuses primarily on the most popular Sanrio characters, using their specific color schemes and personalities to inform fashion choices, interior design (typically rooms), and digital moodboards.

While the Sanrio brand includes many characters, the Sanriocore aesthetic focuses primarily on those with massive global followings, often using a combination of their merchandise and individual stylistic personas.

The most popular characters central to the aesthetic include:

The aesthetic is characterized by a sense of digital cuteness applied to both merchandise and digital edits. Visuals are typically saturated with pastel filters that emphasize light pink, baby blue, and lavender hues. Common digital motifs include sparkles, rounded fonts, speech bubbles, and pixel art, often applied as overlays to photos of character goods.

The moodboards and digital spaces of Sanriocore often feature imagery of plushies, candy, and desserts, contributing to the overall themes of innocence, playfulness, and childhood nostalgia. These elements are frequently used to customize personal items, such as phone cases and shoes.

Sanriocore fashion is eclectic, blending cute and girly styles with dark or edgy elements, sometimes drawing inspiration from subcultures like Pastel Goth or Soft Girl . A user's specific fashion choices can often be determined by the character they align with (e.g., darker themes for Kuromi, softer themes for My Melody).

The style pulls much of its silhouette from the Y2K era and includes a number of distinct accessories:

Makeup for the aesthetic is usually neutral but highly focuses on creating a cartoon-like, innocent appearance. Key elements include:

The music associated with the Sanriocore aesthetic is primarily electronic or pop music with themes of cuteness, innocence, or playful aggression. Playlists often focus on creating a specific "Sanrio vibe" by featuring hyperpop , bubblegum pop, or soft electronic music.