Color Blindness Test
Detect color vision deficiencies
Not a medical diagnosis. This is a screening tool, not a clinical colour vision assessment. Screen brightness, ambient lighting and display calibration all affect the result — only an eye care professional can assess your colour vision properly. See our Terms of Use.
Color Blindness Test
Detect color vision deficiencies
How It Works
- 1.You'll see 8 Ishihara-style color plates
- 2.Identify the number hidden in each colored dot pattern
- 3.Select your answer from the options provided
About Color Blindness
Color blindness affects approximately 8% of men and 0.5% of women worldwide:
- • Red-Green — Most common type
- • Blue-Yellow — Less common
- • Total — Very rare (achromatopsia)
This test is a screening tool only. For a definitive diagnosis, consult an eye care professional.
About the Color Blindness Test
This test uses Ishihara-style color plates to screen for color vision deficiencies. Each plate contains a pattern of colored dots with a number hidden within. People with normal color vision can easily identify the numbers, while those with color blindness may struggle with certain plates.
Types of Color Blindness
Red-Green
The most common type, affecting ~8% of males. Difficulty distinguishing red and green hues.
Blue-Yellow
Less common, affects both males and females equally. Difficulty with blue and yellow tones.
Total (Achromatopsia)
Very rare. Complete inability to see color — the world appears in shades of gray.
Understanding Your Results
- •90-100%: Normal color vision — you can distinguish colors well
- •75-89%: Mostly normal — minor variations, likely not clinically significant
- •50-74%: Mild deficiency — consider a professional eye exam
- •Below 50%: Significant deficiency — consult an eye care specialist
This is a screening tool only and not a medical diagnosis. Screen brightness, ambient lighting, and display calibration can affect results.
Tips for Accurate Results
- •Use a well-calibrated color display (not a low-quality screen)
- •Take the test in good lighting — avoid glare on your screen
- •Don't wear tinted glasses or sunglasses during the test
- •Answer quickly based on your first impression
Frequently Asked Questions
What is an Ishihara-style color blindness test?
It is a screening test made of plates filled with colored dots, each hiding a number or shape. People with normal color vision can read the figure easily, while those with a color vision deficiency see a different number or none at all.
What are the main types of color blindness?
The most common is red-green deficiency (protanopia/protanomaly and deuteranopia/deuteranomaly). Blue-yellow deficiency (tritanopia/tritanomaly) is rarer, and total color blindness (achromatopsia), where the world appears in shades of gray, is very rare.
Who is most likely to be color blind?
Red-green color blindness is largely inherited and X-linked, so it affects roughly 8% of males but under 1% of females. Blue-yellow deficiency affects males and females about equally.
Can an online test diagnose color blindness?
No. This is a quick screening tool, not a medical diagnosis. Screen brightness, ambient lighting, and display calibration can affect your results, so see an eye care professional for a definitive assessment.