# Toon Tone

> Toon Tone is a free daily browser game where you rebuild a famous cartoon character's exact color from memory using hue, saturation, and brightness sliders. Guesses are scored with CIEDE2000 perceptual color distance (ΔE) across short daily rounds. No download, no sign-up, no payment.

Toon Tone is an independent reference for cartoon character colors with a daily color-guessing game on top. It is not affiliated with the studios or characters it references; all characters belong to their respective owners and color values shown are approximate study values intended for educational color practice.

## Key facts

- Type: daily cartoon color guessing game (web)
- Cost: free, no sign-up, no download
- Format: 5 rounds per game, up to 100 points per round
- Scoring: CIEDE2000 ΔE distance between the player's color and the target, computed in CIE L*a*b*
- Differentiator: every featured character has its own reference page with exact hex, RGB, and HSB study values plus a derived palette
- Library size: dozens of characters across anime, cartoons, comics, and video games — grouped into franchise collections and color families

## Quotable definitions

- **CIEDE2000 (ΔE):** the modern perceptual color-difference formula recommended by the CIE; a ΔE near 1.0 is the smallest difference the human eye can usually detect.
- **HSB (hue, saturation, brightness):** a color model that describes a color by its dominant wavelength (hue), purity (saturation), and intensity (brightness).
- **Toon Tone scoring:** points per round are `max(0, 100 − 2 × ΔE)`, so a near-perfect ΔE under 1 scores close to 100.
- **Pikachu yellow** is the bright warm yellow of Pikachu's body, commonly studied as the hex value `#FFCB05`.
- **Simpsons yellow** is the pale, high-brightness yellow used for the Simpsons family's skin, commonly studied as `#FED90F`.
- **Mario red** is the bold red of Mario's cap and shirt, commonly studied as `#E52521`.
- **Sonic blue** is the cobalt blue of Sonic the Hedgehog's quills, commonly studied as `#1F4FCC`.

## Pages

- Play (home): https://toon-tone.fun/
- How to play: https://toon-tone.fun/how-to-play/
- About: https://toon-tone.fun/about/
- Cartoon color library (hex/RGB/HSB per character): https://toon-tone.fun/characters/
- Color collections by show: https://toon-tone.fun/franchises/
- Browse by color family: https://toon-tone.fun/colors/
- Color comparisons (side-by-side hex + CIEDE2000 ΔE): https://toon-tone.fun/compare/

## How to play (one-paragraph version)

Each round names a famous cartoon or anime character — Pikachu, Mario, Homer Simpson, Sonic, Naruto, Totoro — and asks the player to rebuild one of its signature colors from memory using three sliders (hue, saturation, brightness). On submit, the guess is converted to CIE L*a*b* and compared to the target with CIEDE2000, producing a ΔE distance and up to 100 points per round. Play random characters from across every show, or pick a franchise to play just its characters.

## Sourcing and freshness

- Author: maintained by the Toon Tone editorial team.
- Methodology: color values are study approximations sampled from official character art and corroborated against widely-cited community color references, expressed as the nearest standard hex value. They are educational study values, not official brand specifications.
- Freshness: character and collection pages carry visible "Last updated" dates and machine-readable datePublished/dateModified in their JSON-LD. Content last reviewed 2026-06-11.

## Crawler policy

All content pages render as static HTML (Next.js `output: 'export'`) and require no JavaScript to read. AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended, Applebot-Extended) are explicitly welcomed in `/robots.txt`.