Test any color on any screen

Pick a color, scan the QR code with your phone, and see exactly how it renders on every device — iPhone, Android, tablet, smart TV. No install, no signup, just a short URL.

First color (the one you're testing)

Add another color to compare side-by-side

Quick harmonies — derived from #FF4757

Common test palettes — click to replace

Short URL

https://www.colorhexlab.com/d/ff4757Open

Why use this

Brand colors look different on every screen. Your client's phone, the boardroom TV, the office iMac — they all reproduce hues differently. This tool gives you a fast visual ground-truth across devices without needing a calibrated environment.

How it works

The URL is the color. /d/ff4757 renders #FF4757 fullscreen. For palettes, join hexes with a dash: /d/ff4757-2ed573. Stateless — no database, no accounts.

Display gamut

The test surface detects whether the device renders sRGB, Display P3, or Rec. 2020 (where supported by the browser) and shows that on the overlay so you know what color space you're comparing in.