All-around check
A complete pass through the basics.
Compare solid screen colors and gray shades with one click.
RGB 255, 255, 255Select a color, then give it the whole screen.
Tap the pattern to show controls. No automatic cycling or flashing.
Save what you noticed, so you can compare later. One record per test, stored only in this browser.
⌂ Local to this deviceNo automatic result. Choose only what you actually observed.
Choose a check for what you’re seeing.
A complete pass through the basics.
Compare gray screen shades for bands, tint, and uneven areas.
Compare LCD black and near-black fields for edge light.
Fixed dark, bright, or colored points.
Lingering logos, shapes, or uneven tones.
Compare gray and color fields on OLED or AMOLED screens.
Compare familiar colors and gray levels on an LCD.
You do the observing.
We provide the patterns.
Turn off strong night-light filters and avoid reflections for a visual comparison.
Select RGB primary colors, then CMY secondary colors, white, black, purple, or violet.
Check for a visible tint or patch. Compare again at normal viewing brightness.
For accurate color calibration or Delta E measurement, a browser test is not a substitute for a colorimeter and calibration workflow.
No. It displays solid digital colors. It has no colorimeter input and cannot measure color error or write a calibration profile.
They add secondary-color fields alongside red, green, and blue for a visual comparison. Seeing them does not measure gamut or certify color accuracy.
No. The result depends on your display, browser, color profile, brightness, and any active viewing filters.
This page shows solid color fields directly in the browser instead of a compressed video or downloaded image. It helps you compare appearance by eye but does not measure color accuracy.
No. It displays RGB and secondary-color values. Measuring sRGB gamut coverage or color error requires suitable measurement equipment and a color-managed workflow.
Compare the same page on another device and inspect a white or gray field with strong color filters turned off. The cause can be a setting, software, connection, or display issue; these color patterns cannot identify it.
Compare the clues, then return to the tool to repeat your check.
Instructions source-checked · Apple: color management and OLED display behavior. Manufacturer guidance explains the concepts; it does not certify this tool or your panel.
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