Conduct Color Blindness Test Online【Free】 2025 Update

• ✅ Free
• 👌 Accurate & Test Winner (DeutscheOptiker.de)
• 🕐 Done in just 2-4 minutes 

Our test can determine within a few minutes whether you suffer from color blindness or color vision deficiency. Your color weakness can be mild, moderate, or severe.

How does a color blindness test work?

Our color blindness test works by using color plates or images specially designed by experts (ophthalmologists, opticians), consisting of various colored dots or patterns. We also follow the official Ishihara color vision test here.

These colors are selected so that they are easy to recognize for people with normal color vision, while they are harder to recognize for people with color blindness.

During the test, you will be asked to recognize the numbers on the color plates.

If you have difficulty recognizing or distinguishing certain colors, this may indicate color blindness. There are different types of color blindness tests, designed differently depending on the type of color blindness.

At Colordrop, we have developed an accurate color blindness test based on the latest scientific findings that enables precise diagnosis including treatment with our glasses for color blind. Our test is easy to perform and can be conveniently done from home or on your phone

Free and Accurate

Our color blindness test is free and easy to perform. It can be conveniently done from home and takes about 2-3 minutes. 

Ishihara Color Blindness Test online only at COLORDROP

The Ishihara test is a commonly used color blindness test based on the use of special color plates. Each plate contains a number of colored dots arranged to form a specific number, letters, or shapes that are easy to recognize for people with normal color vision.

In this test, the patient is shown a series of color plates and is asked to identify the numbers, letters, or shapes on the plate. If the patient has difficulty identifying the:

• Numbers
• Letters
• Forms

to recognize, this may indicate that he suffers from a form of color blindness.

The Ishihara Test was developed by the Japanese ophthalmologist Shinobu Ishihara and is the most widely used color blindness test. It is capable of detecting the most common types of color blindness, including red-green color blindness, which occurs in most people with color blindness or color vision deficiency.

At Colordrop, we have developed our own book for those who prefer to have something in their hands, with which the test and also our glasses can ideally be tried out at home. Here is the book from Colordrop

Which types of color vision deficiencies can be detected with the color blindness test: 

• Protanopia
• Deuteranopia
• Tritanopia

Protanopia (red deficiency) - a type of red-green deficiency

People with protanopia have difficulty distinguishing between red and green because their red cones do not function or are missing. They may have difficulty recognizing colors such as green, brown, orange, and red.

Deuteranopia (green deficiency) - a type of red-green deficiency

People with deuteranopia have difficulty distinguishing between red and green because their green cones do not function or are missing. They may have difficulty recognizing colors such as green, brown, orange, and red.

Tritanopia (blue-yellow deficiency)

People with tritanopia have difficulty distinguishing between blue and yellow because their blue cones do not function or are missing. They may have difficulty recognizing colors such as blue, purple, and green.

Which color blindness can be detected with the color blindness test?

• Red-green color blindness
• Blue-yellow color blindness
• Blue-yellow color blindness

Red-green color blindness

This type of color blindness occurs in about 8% of men and 0.5% of women and is the most common form of color blindness. It occurs when the cones in the eye, which are normally responsible for detecting red and green spectra, do not function properly or are missing.

Blue-yellow color blindness

This type of color blindness is rarer than red-green color blindness and occurs when the cones in the eye, which are normally responsible for detecting blue and yellow spectra, do not function properly or are missing.

Total color blindness

This type of color blindness is rare and occurs when all types of cones in the eye do not function properly or are missing. People with total color blindness can only see grayscale and have difficulty recognizing or distinguishing colors.

Consider color vision deficiencies and color blindness individually

It is important to note that color blindness is a spectrum and that there are other types of color blindness, such as achromatic color blindness, where all colors are perceived as shades of gray. The exact symptoms and manifestations can vary depending on the person and type of color blindness.