Look at each dot plate and type the number you see — tap “See nothing” if you can’t spot one.
Color Blind Test
Color Blind Test
Ishihara-style dot plate screening for color vision deficiencies
⚠️ Disclaimer: This is a simplified digital screening tool, not a clinical test. Screen calibration, ambient lighting, and display color profiles affect results. Do not use as a substitute for professional diagnosis. Consult an eye care professional if you have concerns about your color vision.
You will see 7 dot plates. Each plate contains a hidden number formed by colored dots.
Type the number you see in each plate and tap Next.
If you can’t see any number, tap “See nothing”.
Sit at a comfortable distance from your screen and ensure good lighting.
Plate 1 of 7
14%
What number do you see in the circle?
Normal Color Vision
0/7
Correct Plates
0/4
Red-Green
0/2
Blue-Yellow
Vision severity indicator
NormalMildSevere
What this means for daily life
Plate-by-Plate Results
#
Type
Answer
Yours
Result
💡 Plates randomize slightly each session — retest in different lighting conditions for a second opinion.
Note: A single incorrect answer does not confirm a deficiency — screen calibration, ambient light, and viewing angle affect results. Multiple missed plates of the same type are more significant. Consult an optometrist or ophthalmologist for an accurate diagnosis.
Each plate is generated using a canvas: the target number is rendered invisibly, then colored dots are placed over the canvas — figure dots use one color palette, background dots use another. For red-green plates, the colors are orange-red vs yellow-green, which look similar to people with deuteranopia or protanopia. For blue-yellow plates, blue vs yellow are used, targeting tritanopia. Normal color vision easily distinguishes the pairs; a deficiency makes the number blend into the background.
Color blindness FAQ
There is currently no cure for inherited color blindness. However, EnChroma glasses and similar optical aids can help some people with red-green deficiency perceive a broader range of colors in bright light — they don’t restore normal vision, but many users find them helpful for specific tasks. Gene therapy research is ongoing and shows early promise, but it is not yet available clinically.
Yes, in most countries. Traffic lights are distinguishable by position (top = red, bottom = green) as well as color, so most color blind people adapt easily. Some countries restrict specific commercial driving licenses (e.g., pilots, train operators). If you’re concerned about a professional license, check your country’s specific regulations with a qualified optometrist.
Most color blindness is inherited. Red-green deficiency is X-linked recessive, which is why it affects around 8% of men but only 0.5% of women — men only need one affected X chromosome, while women need two. Blue-yellow deficiency (tritanopia) is autosomal dominant and equally rare in men and women. Color vision can also change later in life due to cataracts, diabetes, glaucoma, or certain medications — this is called acquired color vision deficiency.
Some professions have strict color vision requirements: aviation (pilots), certain military roles, electricians (wire color coding), and some medical imaging roles. Many countries also restrict color-blind individuals from becoming police officers or firefighters. Graphic design, UI/UX, and photography are careers where color blindness poses practical — though not always insurmountable — challenges. Many color blind designers work successfully using color picker tools and accessibility-first workflows.
Rarely. True total color blindness (achromatopsia) is extremely rare — affecting about 1 in 30,000 people — and does result in grayscale vision. The vast majority of color blind people see colors, just with reduced ability to distinguish specific pairs. Red-green color blind individuals typically see a world with fewer distinct hues — reds, greens, and browns may all look like variations of the same muddy tone — but most colors are still visible.
This is a screening tool, not a clinical test. Screen brightness, color calibration, and ambient lighting all affect accuracy. A clinical Ishihara test uses 38 printed plates under standardized lighting with controlled ink pigments — significantly more rigorous. This tool can indicate a likely deficiency, but a formal diagnosis from an optometrist or ophthalmologist using printed plates or an anomaloscope is needed to confirm type and severity.
What Does the Color Blind Test Detect?
This tool screens for color vision deficiencies using Ishihara-style dot plates rendered directly in your browser with HTML5 Canvas — no download or plugin required. Each plate hides a number inside a field of colored dots. The tool checks whether you can distinguish figure dots from background dots across three deficiency types: red-green color blindness, blue-yellow color blindness, and normal color vision confirmed through a control plate. It is a quick digital screening tool, not a clinical diagnosis, but it gives you a reliable first indication of how your color perception compares to standard vision.
What Types of Color Blindness Does This Test Cover?
This test covers the three most common categories of color vision deficiency. Red-green color blindness, which includes deuteranopia and protanopia, affects roughly 8 percent of males and 0.5 percent of females worldwide. Blue-yellow color blindness, known as tritanopia, is rarer and can also be linked to certain medications or eye conditions. The test also includes a control plate that all users with normal vision should pass, which helps rule out screen calibration issues. It works on any modern browser across desktop, laptop, tablet, and mobile devices without any additional software.
How To Use This Tool
Click Begin Test to start. A circular dot plate will appear on screen with a number hidden inside the pattern. Type the number you see into the input field and click Next to move to the following plate. If you cannot see any number at all, tap the See Nothing button instead of guessing. Work through all seven plates at a comfortable pace in a well-lit room. Avoid adjusting your screen brightness mid-test. Once you complete all plates, your results appear automatically with a plate-by-plate breakdown.
Understanding Your Results
After the test, you receive a result based on how many plates you answered correctly across each category. Passing all seven plates suggests normal color vision. Missing two or more red-green plates may indicate deuteranopia or protanopia. Missing a blue-yellow plate may point toward tritanopia. If you miss the control plate, the result is marked inconclusive, usually due to poor screen calibration or lighting. One missed plate is not a confirmed diagnosis. Consistent errors across multiple plates of the same type are the more meaningful signal to bring to an eye care professional.
