Color Banding Test
Smooth gradients reveal banding, posterization, and compression-like steps that flat color screens can hide.
Live screen test
Start with the real patterns.
Look for banding in full color transitions.
What it checks
Use this test when you need a clear visual answer.
Color Banding Test is built for quick inspection, not lab measurement. It gives you controlled browser patterns so you can decide whether the screen needs setup, retesting, or warranty attention.
Visible gradient steps
Posterized color transitions
Compression or processing artifacts
Result guide
How to read the color banding result
Start with the color gradient pattern, then switch to adjacent patterns before making a decision. A real display problem usually stays in the same area when the pattern changes. A reflection, viewing angle shift, browser zoom issue, or temporary image setting often changes when you move your head, adjust brightness, or repeat the test after a restart.
Visible gradient steps
Use this page to isolate visible gradient steps under controlled screen patterns. Scan the center, edges, and corners, then confirm the same area with a second pattern before you treat it as a panel issue.
Posterized color transitions
Use this page to isolate posterized color transitions under controlled screen patterns. Scan the center, edges, and corners, then confirm the same area with a second pattern before you treat it as a panel issue.
Compression or processing artifacts
Use this page to isolate compression or processing artifacts under controlled screen patterns. Scan the center, edges, and corners, then confirm the same area with a second pattern before you treat it as a panel issue.
Workflow
How to use the color banding test
Open the gradient test fullscreen and disable browser zoom.
Look for hard stripes where the transition should be smooth.
Compare grayscale and color gradients to separate panel limits from color processing.
Use cases
Where this screen test is most useful
Creative work
Check whether skies, shadows, and soft backgrounds show unwanted steps.
Streaming setup
Spot banding made worse by picture enhancement or limited color output.
GPU output check
Compare after changing bit depth, color range, or cable input.
Reading the result
Practical tips before you decide
Disable enhancement modes
Dynamic contrast and sharpening can exaggerate banding.
Check color range
Limited RGB output can make gradients look worse on some monitors.
Use multiple gradients
Banding can appear in grayscale, blue skies, or saturated color ramps.
Device setup
Use the same screen test across real viewing setups
The color banding test works best when the test matches the way you actually use the display. Keep the room lighting, brightness, scaling, and viewing distance close to normal, then repeat the pattern only after a setting change. This keeps the result practical instead of turning the page into a lab claim.
Desktop and laptop monitors
Use native resolution, 100 percent browser zoom, and the monitor picture mode you normally use. If you change brightness, contrast, overdrive, or color temperature, repeat the color banding pass before comparing results.
TVs, projectors, and large panels
Step back to your real viewing distance after a close inspection. Large screens can exaggerate small edge, glow, focus, or processing issues, so confirm anything suspicious with normal video, games, or desktop content.
Phones and tablets
Rotate the device if the browser supports it, clean the glass, and reduce reflections before judging the result. Some mobile browsers limit fullscreen behavior, but the same pattern sequence still helps with quick display checks.
Related tests
Continue with adjacent checks
Gamma Test
Gamma affects midtone brightness. This test gives you reference patterns for judging whether gray steps look balanced.
Contrast Test
Use stepped tone patterns to see whether your display keeps dark and bright details separate.
Screen Uniformity Test
Uniformity patterns help you see whether brightness and color remain consistent from center to corners.
Blue Screen
A pure blue screen isolates the blue channel and helps reveal defects that may hide on white or red patterns.
FAQ
Color Banding Test questions
These answers match the visible test on this page and avoid warranty or measurement claims that depend on your specific display.
What does color banding look like?
Banding appears as visible stripes or steps in a gradient that should look smooth.
Is banding always caused by the monitor?
No. GPU output range, cable settings, browser rendering, video compression, and panel bit depth can all contribute.
Can calibration fix banding?
Calibration may improve tone response, but severe panel or bit-depth limitations may remain visible.
Why do gradients look worse in videos?
Video compression can add banding even if the display itself handles smooth gradients well.
Can I use the color banding test on more than one device?
Yes. Open the same page on each monitor, laptop, phone, tablet, TV, or projector, then compare the color banding result under similar brightness and room lighting. Device browsers can handle fullscreen differently, but the visual patterns are still useful for a practical check.
Does this online color banding test replace professional calibration?
No. This page is a browser-based visual test for finding obvious display problems and setup issues. For color-critical work, brightness targets, or measured calibration, use a hardware colorimeter or professional display workflow after the visual pass.
How to Check a Monitor for Dead Pixels
A reliable dead pixel check uses fullscreen solid colors, steady lighting, and a repeatable inspection path. The goal is to separate real panel defects from dust, reflections, scaling artifacts, and temporary cable issues.
How to Test a New Monitor
A new monitor should be tested before you mount it, remove packaging, or let the return window pass. Start with panel defects, then verify uniformity, tone, text clarity, refresh rate, and real content.
Monitor Calibration Guide
Browser tests can help you set a monitor to a sensible baseline and spot obvious problems. They do not replace a colorimeter, but they make brightness, contrast, gamma, sharpness, and banding easier to judge before hardware calibration.
Ready to inspect the full screen?
Open the fullscreen pattern and move through the test slowly.