What does color banding mean on a monitor?

Color banding occurs when there aren't enough colors available to render smooth transitions, resulting in visible stripes or blocks. This is common on 6-bit or low-quality 8-bit panels.

How can I tell if my monitor has accurate colors?

Use the solid color and grayscale tests. If colors shift when viewed from different angles or if dark grays blend together, your monitor may need calibration or have a limited panel type (like budget TN).

Monitor Color Test — Accuracy, Gradient & Banding Checker

Monitor Color Test — Color Accuracy & Gradient Checker

📅Published: February 21, 2026👤Author: FPS Tools Team

Test your monitor's color accuracy with solid color panels, full-spectrum gradients, and grayscale ramps. Spot banding, color shifts, and calibration issues.

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Why Monitor Color Accuracy Matters

Color accuracy is critical for photographers, video editors, graphic designers, and anyone who needs their display to show colors as they truly are. Even gamers benefit from accurate color — a well-calibrated monitor reveals more detail in shadows, displays more vivid environments, and provides a more immersive visual experience.

How to Use the Color Test

Switch between three modes — Solid Colors, Color Gradient, and Grayscale Ramp — to evaluate different aspects of your monitor's color performance. Use fullscreen mode for solid colors to fill your entire display and inspect uniformity.

Solid Colors — Check for uniformity. The color should be consistent across the entire screen without dark patches or color shifting.
Color Gradient — Look for smooth transitions. Visible "banding" (hard lines between color steps) indicates limited color depth or poor calibration.
Grayscale Ramp — All steps should be distinguishable. If dark grays blend together, your monitor's black level or gamma may need adjustment.

Understanding Color Depth

Most consumer monitors display 8-bit color (16.7 million colors). Professional monitors support 10-bit color (1.07 billion colors), resulting in smoother gradients and more accurate color representation. Your browser's ability to display these colors depends on both your monitor and your GPU's output capabilities.

Frequently Asked Questions

Why do I see banding in gradients?

Visible banding typically indicates 6-bit or 8-bit color depth with poor dithering. 10-bit displays show much smoother gradients. Your GPU output settings may also limit color depth — check your GPU control panel for color output settings.

How do I calibrate my monitor colors?

For professional calibration, use a hardware colorimeter (like X-Rite i1Display or Datacolor SpyderX). For basic calibration, Windows has a built-in Display Color Calibration tool (search "Calibrate display colort" in Settings).