About Red-Green Color Blindness
Red-green deficiency is the most common type of color vision limitation. It affects how well red and green are distinguished. This page uses Ishihara-style plates as a simple screen-not a clinical exam.
Test Your Color Blindness and Color Vision Online
Take this quick red-green color vision screening to check for common color blindness.
A person with normal vision sees the leaf on the right, while a person with red-green color blindness tends to see the leaf on the left.
When red and green elements appear together (as on the right), people with red-green deficiency may not separate them clearly (as on the left)-a reminder to avoid relying on red–green alone in design.
Red-Green Color Blindness Test - Ishihara Plates
What number or word do you see?
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How to Take the Test
- Look at each plate and enter the number or word you see
- If you cannot see anything, enter 0
- After typing, click outside the input field to see feedback for the current plate
- Use the left and right arrows to move between plates
- Answers are checked when you leave the input field
Notes
- This is a screening tool only-not a medical diagnosis
- Use good lighting and a normal screen brightness
- Sit at a comfortable viewing distance
- If you wear glasses or contacts for vision, keep them on
- See an eye care professional for a full evaluation