Red Screen
#FF0000 · RGB(255,0,0)
Click or press F for fullscreen
30-50% as a lamp · 80-100% for testing
Use Cases
Red channel defects
Dark or off-color dots on pure red mark failing red subpixels.
Night-friendly light
Red light barely suppresses melatonin — the gentlest late-night option.
Dark adaptation
Astronomy and night navigation use red light to preserve night vision.
Ambient lamp
Low-brightness red is the classic mood light for bars and battle stations.
Three Steps
01
Set brightness
Use 20-40% at night; 100% for pixel checks.
02
Go fullscreen
Click the swatch or press F to fill the screen with red.
03
Inspect or relax
Hunt off-color dots or just enjoy the glow. Esc exits.
FAQ
Tips
- Red light stimulates rod cells the least — that is the护眼 basis
- Red subpixel defects show as off-color on other colors
- OLED red uses less power than white
- Pair with a red flashlight for astronomy