Color Blindness Simulator

Experience and understand how the world looks through different types of color vision deficiencies.

1 Select Vision Condition
Protanomaly (Red-Weak)
~1.08% of Males | ~0.03% of Females

L-cones (red receptors) have shifted spectral sensitivity. Red colors appear duller, brownish, and less distinct from green.

Simulated Vision
Normal Vision
Normal Vision
Drag Slider
Protanomaly (Red-Weak)
Normal Vision
Normal Vision
Simulated Vision
Protanomaly (Red-Weak)
2 Sample Test Images
3 Upload Your Own Image
Choose or Drag Image Here
PNG, JPG, WEBP up to 10MB
4 Comparison Mode
Drag the slider to compare normal vs. simulated vision in real time.
Real-Time Light Spectrum Shift
Normal Vision Spectrum 750nm
Protanomaly (Red-Weak) Shift 750nm
380nm 750nm
The spectrum shows how colors are perceived with Protanomaly (Red-Weak).

Medical Disclaimer

This Color Blindness Simulator is designed strictly for educational and awareness purposes. It is not an official diagnostic tool and does not replace professional clinical testing. For an accurate assessment or treatment of color vision deficiencies, please consult a certified ophthalmologist or eye care professional.

Privacy Protection

Your privacy is fully safeguarded. All image processing runs entirely on your local device (in-browser). We do not collect, upload, store, or share any images you upload.

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