Color Blindness Test
Quick color vision screening inspired by Ishihara plates. Identify the number hidden in each pattern. This is a screening tool, not a medical diagnosis.
Red-green deficiency test plate
Testing guide
How to take the color blindness test
This is a quick Ishihara-style screening: each plate hides a number in a field of colored dots, and the number should be difficult or impossible to see for someone with the type of color vision deficiency that plate targets. It is a screening tool, not a medical diagnosis.
Best for
- A quick first check if you suspect you might have a color vision deficiency.
- Screening before color-critical work like design, wiring, or map reading.
- Curiosity about how your color perception compares to standard vision.
How to run the test
- 1View the plates on a well-lit, color-accurate screen, ideally not a very cheap or uncalibrated panel.
- 2Type the number you see in each plate within a few seconds, before you start second-guessing yourself.
- 3Complete all five plates without skipping any, since each targets a different type of deficiency.
- 4Review your score, and if you missed several plates, treat it as a signal to get a proper eye exam rather than a final answer.
How to read the result
A perfect score across all plates suggests typical color vision for the deficiencies these plates screen for.
Missing one plate consistently can point toward a specific mild deficiency rather than a general vision problem.
Missing most or all plates is a strong signal to see an optometrist, since this screening cannot diagnose the type or severity.
Related tools and guides
Frequently asked questions
Is this test a real medical diagnosis?
No. This is a simplified screening inspired by the Ishihara test format, useful as a first indicator. Only an eye care professional using proper calibrated equipment and full plate sets can diagnose the specific type and severity of a color vision deficiency.
What is the difference between the types of color blindness?
Red-green deficiencies (protanopia and deuteranopia) are the most common and affect the ability to distinguish reds and greens. Blue-yellow deficiency (tritanopia) is rarer and affects blues and yellows. Complete color blindness, seeing only in grayscale, is extremely rare.
Does my monitor affect the test result?
Yes, significantly. A poorly calibrated or cheap monitor with narrow color gamut or inaccurate colors can make plates harder to read correctly even for someone with normal color vision, or easier to guess incorrectly. Use a normal, reasonably accurate display in good lighting.
Can color blindness develop later in life?
Most color vision deficiency is genetic and present from birth, more common in men than women. However, certain eye diseases, medications, and aging can cause acquired color vision changes later in life, which is another reason to see a professional if you notice a sudden change.
I got a low score but I do not think I am color blind, why?
Screen calibration, brightness, viewing angle, and even the device you are using can all affect how these plates render. A single low score on a screening tool is not conclusive. Try it again on a different, well-lit display, and see an optometrist for a definitive answer.
Testing guide
How to take the color blindness test
This is a quick Ishihara-style screening: each plate hides a number in a field of colored dots, and the number should be difficult or impossible to see for someone with the type of color vision deficiency that plate targets. It is a screening tool, not a medical diagnosis.
Best for
- A quick first check if you suspect you might have a color vision deficiency.
- Screening before color-critical work like design, wiring, or map reading.
- Curiosity about how your color perception compares to standard vision.
How to run the test
- 1View the plates on a well-lit, color-accurate screen, ideally not a very cheap or uncalibrated panel.
- 2Type the number you see in each plate within a few seconds, before you start second-guessing yourself.
- 3Complete all five plates without skipping any, since each targets a different type of deficiency.
- 4Review your score, and if you missed several plates, treat it as a signal to get a proper eye exam rather than a final answer.
How to read the result
A perfect score across all plates suggests typical color vision for the deficiencies these plates screen for.
Missing one plate consistently can point toward a specific mild deficiency rather than a general vision problem.
Missing most or all plates is a strong signal to see an optometrist, since this screening cannot diagnose the type or severity.
Related tools and guides
Frequently asked questions
Is this test a real medical diagnosis?
No. This is a simplified screening inspired by the Ishihara test format, useful as a first indicator. Only an eye care professional using proper calibrated equipment and full plate sets can diagnose the specific type and severity of a color vision deficiency.
What is the difference between the types of color blindness?
Red-green deficiencies (protanopia and deuteranopia) are the most common and affect the ability to distinguish reds and greens. Blue-yellow deficiency (tritanopia) is rarer and affects blues and yellows. Complete color blindness, seeing only in grayscale, is extremely rare.
Does my monitor affect the test result?
Yes, significantly. A poorly calibrated or cheap monitor with narrow color gamut or inaccurate colors can make plates harder to read correctly even for someone with normal color vision, or easier to guess incorrectly. Use a normal, reasonably accurate display in good lighting.
Can color blindness develop later in life?
Most color vision deficiency is genetic and present from birth, more common in men than women. However, certain eye diseases, medications, and aging can cause acquired color vision changes later in life, which is another reason to see a professional if you notice a sudden change.
I got a low score but I do not think I am color blind, why?
Screen calibration, brightness, viewing angle, and even the device you are using can all affect how these plates render. A single low score on a screening tool is not conclusive. Try it again on a different, well-lit display, and see an optometrist for a definitive answer.