Kidcore

aka Rainbowcore, Childhood Nostalgia

established

"Childhood forever"

Nostalgic celebration of childhood through rainbow colors, primary patterns, and 90s/2000s kid culture.

Atmosphere

The sensory world of Kidcore

Playgrounds, toy aisles, Saturday morning cartoons, juice boxes

Philosophy

Adulting is optional, nostalgia is comfort, color is joy

Who Lives Here

The character archetypes that embody Kidcore

The Forever Kid

The Nostalgic

The Collector

What It Rejects

Kidcore exists in opposition to:

Adult seriousness

Muted colors

Growing up

Daily Rituals

The practices and behaviors that define this way of living

Toy collecting

Cartoon marathons

Playground visits

Rainbow everything

Origin

Emerged on TikTok 2020 during pandemic as escapist nostalgia for carefree childhood.

Era

2020-Present

Regions

Online, Global youth

Trend Score

76

Key Elements

Key Garments

  • Overalls
  • Primary colors
  • Character tees
  • Light-up shoes
  • Colorful accessories
  • Rainbow patterns
  • Cartoon prints

Silhouettes

  • Playful
  • Oversized
  • Comfortable

Color Palette

Crayon box palette of childhood

Primary Colors

Rainbow
Primary colors

Secondary Colors

Bright yellow
Sky blue

Accent Colors

Neon
Glitter

Key Brands

Lazy Oaf
streetwearcore
Thrift stores
indiecore

Materials

CottonDenimBright synthetics

Cultural Context

Pandemic escapism, nostalgia culture, rejecting adult responsibilities

Associated Music

2000s popKidz BopCartoon themes

Core Relationships

Influenced By

Y2K
Kawaii

Influences

90s/2000s childhood
Cartoon Network
Lisa Frank

Related Cores

Weird Girl
Cluttercore
Last updated: January 17, 2026