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Color Blindness Test
Take a comprehensive Ishihara-style color blindness screening test. Detect Protanopia, Deuteranopia, and Tritanopia with detailed results and severity scores.
Ishihara Color Vision Test
Comprehensive screening for color vision deficiency
This test uses 18 Ishihara-style plates to screen for three types of color vision deficiency:
- Protanopia — reduced sensitivity to red light
- Deuteranopia — reduced sensitivity to green light
- Tritanopia — reduced sensitivity to blue light
Each plate shows a circle of colored dots with a hidden number. Select the number you see (or "Nothing" if you cannot see one).
Tips for Accurate Results
- Ensure your screen brightness is at a comfortable level
- Disable any color filters or night-mode (e.g. f.lux, Night Shift)
- View in a well-lit room without direct screen glare
- Respond instinctively — take no more than a few seconds per plate
Disclaimer: This is a screening tool only. Screen calibration can affect results. For a clinical diagnosis, please consult a qualified eye-care professional.
About Color Blindness Test
A color blindness test uses Ishihara-style plates to screen for the most common types of color vision deficiency. It checks for Protanopia, Deuteranopia, and Tritanopia and reports detailed results with severity scores. The test is a quick self-screening tool and is not a substitute for a professional eye exam.
How to Use
View each plate and enter the number or pattern you see within it. Work through the full set of plates without straining or guessing. Review your results at the end, which indicate the likely type and severity of any color vision deficiency.
Common Use Cases
- Screening for color vision deficiency
- Identifying the likely type of color blindness
- Checking color perception at home
- Understanding severity before an eye exam
- Raising awareness of color vision differences
Frequently Asked Questions About Color Blindness Test
What is Color Blindness Test?
Color Blindness Test is a free online tool on akousa.net, a platform with 559+ browser-based utilities. Take a comprehensive Ishihara-style color blindness screening test. Detect Protanopia, Deuteranopia, and Tritanopia with detailed results and severity scores. No installation is required.
How do I use Color Blindness Test?
Simply open Color Blindness Test on akousa.net, enter or upload your data, configure any options, and click the action button. Results appear instantly in your browser.
Is Color Blindness Test free?
Yes, the core Color Blindness Test experience is free to use without signup. All 559+ tools remain available for everyday use, while Akousa Pro adds optional premium platform features and ad-free browsing.