Blue Screen

Click the blue screen preview to activate it

Press the Fullscreen button (or F11 on desktop) for full coverage

Adjust brightness to find stuck pixels or set the right lighting mood

Press ESC or use the Fullscreen button to exit

Yellow & Orange Stuck Pixel Detection

Blue screens are the most effective color for detecting yellow and orange stuck pixels. When both red and green subpixels get stuck in the "on" position, they create yellow or orange bright spots that are dramatically visible against pure blue. If you have noticed color distortion but cannot identify the source, a blue screen test is the best place to start.

Red & Green Subpixel Testing

Individual subpixel failures show clearly on blue screens. Red subpixel defects appear as magenta or reddish bright spots. Green subpixel issues manifest as cyan or bright green dots. Combined with red and green screen tests, blue provides complete RGB subpixel coverage for thorough display diagnostics.

Color Accuracy & Calibration

Test your display's blue channel reproduction for photography, video editing, and graphic design. Blue is a critical channel in RGB displays and requires precise calibration for accurate color grading. Check for uniform blue tone across the entire screen — variations indicate calibration problems or manufacturing defects.

Morning Productivity & Alertness

Blue light exposure during morning hours suppresses melatonin production and signals your body to wake up. Use blue screens for 15–30 minutes after waking to improve alertness, focus, and cognitive performance. This mimics natural daylight's effect on circadian rhythm and can help combat morning grogginess.

Photography & Video Lighting

Create cool, modern lighting for product photography, tech demos, or creative portraits. Blue fill light adds dimension without warmth — perfect for futuristic themes, tech products, or creating contrast with warm key lights. Adjust brightness to control intensity and match your lighting setup.

Screen Uniformity Testing

Blue screens reveal color temperature variations and panel uniformity issues invisible on other colors. Look for lighter or darker blue patches across the display — uneven tones indicate aging backlights, quality control problems, or manufacturing defects. Set brightness to 50% in a dark room for best results.

OLED Burn-In Prevention

Displaying solid blue exercises blue OLED subpixels uniformly, potentially reducing image retention. Blue subpixels typically age faster than red or green on OLED displays, so periodic blue screen sessions help balance pixel wear. Rotate through other solid colors for comprehensive OLED maintenance.

Video Background & Virtual Meetings

Blue screens provide professional, calming backdrops for video calls and presentations. Cool blue tones convey trust and professionalism without the clinical harshness of pure white or the dramatic intensity of dark colors — subtle enough to avoid distraction while maintaining visual presence.

Yellow is the complementary opposite of blue on the color wheel. Yellow stuck pixels (red and green subpixels both stuck on) create maximum contrast against a pure blue background, making even single defects immediately visible as bright yellow or orange dots. White screens can hide these — blue screens expose them instantly.