What is Color Blindness?

Color Blindness relates to the problem of distinguishing between colors compared to a healthy and normal human being. The condition is also known as color vision deficiency and is more common for green, red, blue and combination of both colors.

Based on the severity of the condition, they can be categorized into protanopia, deuteranomaly, monochromacy, and several others. The condition has multiple causes, like glaucoma, the effect of chemicals, and much more.

Genetically retained blindness contributes to the majority of the cases, and the condition is more frequent in men than women. Almost one in 12 or 13 is affected by color blindness.

According to recent statistical data, more than 360 million people in the world suffer from blindness which accounts for roughly 4.01% of the population.

What is Color Blindness

The color blind test is the best way to know your condition and level of color blindness (color vision deficiency) that causes trouble with colors. The test uses Ishihara plates containing random numbers that help to evaluate results. It helps to know about color blindness without consulting doctors.

Once the test has begun, you must identify the digits that have formed around the different colored plates and move on to the next plate. However, it is also important to note that the results will depend on the quality and type of device used to perform the test.

Color blind test

Types of Color Blindness & Their Levels

1. Red-Green Type

It is one of the most common forms of color blindness observed. It reduces your ability to differentiate between red and green color pigments based on their subtypes. The condition does not affect performing daily tasks such as sorting colorful clothes.


A subcategory of the Red-Green condition in which the red cone pigments cannot be recognized by the person and the elements colored in red are black.


In such a case, colors like orange, red, and yellow appear green. Furthermore, their appearance is dim compared to the existing color of the element. In order to diagnose color vision deficiency, some opticians use a reverse color blind test. In this test, patients are asked to identify colored objects in a palette against a dynamic colored background.


It is another common condition in which yellow and green color elements appear as either red, purple, or blue.


Under cases of Deuteranopia, you are unable to recognize green pigments and see red color elements as brown-yellow and green colors as dark yellow.

2. Blue-Yellow Type

It is a much rarer form of blindness observed than other conditions. Under such a situation, the person cannot distinguish blue and yellow colors from the others. Similar to the previous condition, it does not affect daily tasks making it less dangerous.


In such a condition, the person faces challenges in identifying blue colors as they appear green. Furthermore, it is also hard to differentiate between pink and yellow or red.


As people with such conditions do not possess blue cone pigments, blue appears green and yellow as purple.

3. Full (Monochromacy) Type

Another rare condition in which a person cannot distinguish between all colors affects their ability to see. Two notable forms of such conditions are as follows. It is hard for people suffering from this condition to perform tasks like driving or activities demanding the ability to sort colors.

Cone Monochromacy

Under such conditions, more than two cone cell pigments do not function efficiently, leading to difficulty in filtering colors. It is because the brain relies on multiple cone cells to acquire signals that help detect colors.

Rod Monochromacy

This form of color blindness is acquired genetically and is present from birth. Only black, white, and gray colors can be seen by a person affected. Such people have difficulty when present in a bright environment.

how to test color blindness

How to Test Color Blindness?

Take a Test

Visit the colorblindtest.net website with any browser, and click on the "take the test" button to begin the test.

Choose the Number

In the test, you must identify a number within a series of images or color combinations. You can skip if you are unsure.

Get Result

After the test, you will get a result indicating the type of color blindness with your accuracy and correct/wrong answers.

Things You Should Know About
Lenses, Glasses and Color Filters

To improve the experience of people affected by this condition, various lenses, glasses, and color filters are available. Such glasses focus on providing tinted lenses, which helps to avoid overlapping of different color wavelengths allowing you to see more precisely.

They help to improve the experience as a person wearing such glasses can choose clothes with multiple colors or improve productivity in fields like graphic designing or profiles that require accurate differentiation between colors.

Furthermore, Enchroma color glasses are also an ideal option for sorting colors more efficiently. It is advisable to avoid using such glasses or lenses while taking the test for more accurate results as they help in better sorting of colors.


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What Are The Causes Of Color Blindness?

One of the most common causes leading to color blindness is the genetic inheritance of the condition. Such inherited color deficiencies reduce the ability to distinguish between colors and are more common in males.

Some diseases, such as diabetes, glaucoma, Parkinson's disease, leukemia, and cell anemia contribute to blindness. In such cases, it is treated by curing the core disease.

Medications can also contribute to a reduced ability to identify colors. Drugs prescribed to cure heart ailments, high blood pressure, infections, or other psychological problems can lead to the inability to separate colors.

Exposure to harmful or toxic chemicals like manures, fertilizers, or carbon sulfide can lead to color vision issues.

Symptoms Of Color Blindness?

Symptoms of color blindness help to monitor the condition in a better way. Below we have discussed some notable symptoms of failure to identify the colors.

  • Sensitivity to bright lights.
  • Headache and pain in the eyes focusing on elements with red or green fillings.
  • Hard to read pages with multiple colors.
  • Better vision at night times.
  • Enhanced smelling senses.

Aside from the mentioned symptoms, it is also possible to acquire color blindness due to genetic inheritance. In such cases, monitor any issues or difficulties with colors like red, green, brown, and others.

Frequently Asked Questions

How To Check Color Blindness?

Color blindness can be checked using multiple tests. However, our color blind test is the best way to identify color deficiencies as it includes the use of Ishihara plates. The test uses such plates containing digits within, chosen by the user to generate accurate results.The results of the test will indicate if you have color blindness, which is the inability to distinguish between colors within a certain range. Assume that it shows that you failed the test and that you are experiencing symptoms of it. Hence, you should consult your doctor or optometrist to determine what specific conditions may cause this problem and what treatment options are available. You can ensure optimal vision by keeping your eyes healthy by identifying any vision problems early.

What Colors Can Colorblind People See?

It depends on the type of blindness condition a person is diagnosed with. In the case of Deuteranomaly, a person cannot identify yellow and green colors. It is one of the most common color vision deficiency conditions observed.

Can You Correct Color Blindness?

Color blindness can be set right with special glasses, lenses, and color filters that improve the ability to distinguish between colors. Enchroma glasses are also helpful in improving the sorting of colors. It is important to note that these methods cannot correct genetically inherited color blindness.

Can Color-Blind People Drive?

It depends on the type of color blindness condition of the person. You can use the color-blind test to determine the results. Furthermore, people affected by such conditions should exercise caution while driving for a better experience.