Color & Calibration
Screen Color Test
Display pure black, white, red, green, blue and more, full-screen.
▶ Start full-screen testBlack← / → or tap the sides to switch · Esc to exit
How to use
- 1Click Start to go full-screen.
- 2Use ← / → or tap left/right to switch colors.
- 3Look for tint, blotches, or dots that differ from the solid field.
- 4Press Esc to exit.
FAQ
Why test individual solid colors?
Solid red, green, and blue isolate each sub-pixel so defective sub-pixels and color uniformity issues become obvious.
Is there a dedicated black and white screen?
Yes — open the Black Screen or White Screen tool for a single, distraction-free color you can use for cleaning or backlight checks.
Tips
- Solid red, green, and blue are best for spotting a defective sub-pixel.
- A faint overall tint on the white field usually means your color temperature / white balance is off.
Related tests
Black ScreenA pure black full-screen for backlight, dust, and OLED checks.Open test→White ScreenA pure white full-screen for cleaning, lighting, and uniformity.Open test→Greyscale TestSmooth gradient and 32-step ramp to reveal color banding.Open test→Color GradientSmooth spectrum and RGB gradients to judge color transitions and banding.Open test→
Related guides
Learn more about what this test reveals and how to act on the results.
Color Gamut Explained: sRGB vs DCI-P3 vs Adobe RGBWhat gamut percentages on a spec sheet actually mean, how sRGB, DCI-P3 and Adobe RGB differ, and which one matters for the work you do.Color Accuracy and Delta E (ΔE), ExplainedWhat ΔE numbers mean, what counts as 'good enough' for print and for web, and why accuracy matters more than vividness in creative work.Why Is Part of My Screen Discolored or Tinted?Yellow, pink, or rainbow patches usually point to a cable, pressure, or panel fault. Here's how to narrow it down before you pay anyone.How to Test a Monitor Before (and Right After) BuyingWhat to check in the store and at home so you don't keep a monitor with dead pixels, bleed, or the wrong refresh rate.