# Custom QR Code Styling Best Practices: Colors, Contrast & Error Correction
Quick Response (QR) codes have become the standard bridge between the physical and digital world. Whether used on restaurant menus, packaging, Wi-Fi stickers, or event banners, creating an attractive yet reliable QR code requires adherence to scanning standards.
Use TargetRoot's free [QR Code Generator](/tools/generator/qr-code-generator) to produce high-resolution, permanent codes.
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## 3 Golden Rules for Scannable QR Codes
### 1. Maintain High Foreground/Background Contrast
Dark foreground on a light background works best for camera sensors. Never invert to a light QR code on a dark background unless you test across diverse smartphone cameras. Check contrast using our [Contrast Checker](/tools/color/contrast-checker).
### 2. Select the Right Error Correction Level (ECC)
QR codes support 4 levels of Reed-Solomon error correction:
- **Level L (7%):** Smallest data footprint; ideal for clean digital displays.
- **Level M (15%):** Standard for consumer scanning.
- **Level Q (25%):** Good for industrial environments with minor scuffing.
- **Level H (30%):** Essential if you plan to embed a logo or icon in the center.
### 3. Ensure Adequate Quiet Zone
Always leave at least 4 modules of empty whitespace around the exterior of the QR code so scanners can isolate the finder patterns.
Generate your custom QR code now with our [QR Code Generator](/tools/generator/qr-code-generator).
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