So you or someone you know is colour blind?

Grab our favourite corrective sunglasses: EnChroma Color Blind Glasses Or check out our shop for the full range of corrective glasses and other useful items for parents, teachers, and kids.

Ishihara Color Test Instructions

Plates 1 – 17 each contain a number, plates 18 – 24 contain one or two wiggly lines. To pass each test you must identify the correct number, or correctly trace the wiggly lines.

Sit approximately 75cm from your monitor, with each circle set at eye level. Preferably have mild natural light and no glare on your screen. Interior lights and glare can alter the color of the pictures. Attempt to identify the hidden number or line within 5 seconds then click on the image (left mouse button). Upon left clicking, the answer will be revealed along with an analysis explaining your condition if you got it wrong. Continue to the next Ishihara test, Complete them all to help gauge your color blindness severity. Share the test with your friends!

Notes:

You can toggle back and forth between the original plate and the answer by clicking on the plate itself.

itself. Plate 1 and 24 are control tests – people with normal vision and all forms of color blindness should be able to distinguish these. These two plates are particularly useful for identifying cheeky behaviour when testing children!

This test cannot guarantee complete accuracy. Your monitor and quality loss of online images may affect the original colors used. Should these tests suggest that you may be color blind, you should seek professional confirmation.

You need to have JavaScript enabled to reveal the answers. For any further problems – leave a comment at the bottom of this page :).

NEW: A man by the name of Antony Tran has converted my test into an Android App, So for all of you with Android smartphones / Pads, check out Color Blend. The app can also tell you what color something is just by pointing your device’s camera at it – VERY handy for us color blind people.

The Ishihara Color Test for Color Blindness

Ishihara Color Blindness Test Plate 1

What did you see? “12” All people should see a number 12, including those with total color blindness – If someone said they can’t see something, or saw something else – they are fibbing:)

Ishihara Color Blindness Test Plate 2

What did you see? “8” Those with normal color vision see an 8. “3” Those with red green color blindness see a 3. Nothing Those with total color blindness see nothing.

Ishihara Color Blindness Test Plate 3

What did you see? “29” Those with normal color vision see a 29. “70” Those with red green color blindness see a 70. Nothing Those with total color blindness see nothing.

Ishihara Color Blindness Test Plate 4

What did you see? “5” Those with normal color vision see a 5. “2” Those with red green color blindness see a 2. Nothing Those with total color blindness see nothing.

Ishihara Color Blindness Test Plate 5

What did you see? “3” Those with normal color vision see a 3. “5” Those with red green color blindness see a 5. Nothing Those with total color blindness see nothing.

Ishihara Color Blindness Test Plate 6

What did you see? “15” Those with normal color vision see a 15. “17” Those with red green color blindness see a 17. Nothing Those with total color blindness see nothing.

Ishihara Color Blindness Test Plate 7

What did you see? “74” Those with normal color vision see a 74. “21” Those with red green color blindness see a 21. Nothing Those with total color blindness see nothing.

Ishihara Color Blindness Test Plate 8

What did you see? “6” Those with normal color vision see a 6. Nothing The majority of color blind people cannot see this number clearly.

Ishihara Color Blindness Test Plate 9

What did you see? “45” Those with normal color vision see a 45. Nothing The majority of color blind people cannot see this number clearly.

Ishihara Color Blindness Test Plate 10

What did you see? “5” Those with normal color vision see a 5. Nothing The majority of color blind people cannot see this number clearly.

Ishihara Color Blindness Test Plate 11

What did you see? “7” Those with normal color vision see a 7. Nothing The majority of color blind people cannot see this number clearly.

Ishihara Color Blindness Test Plate 12

What did you see? “16” Those with normal color vision see a 16. Nothing The majority of color blind people cannot see this number clearly.

Ishihara Color Blindness Test Plate 13

What did you see? “73” Those with normal color vision see a 73. Nothing The majority of color blind people cannot see this number clearly.

Ishihara Color Blindness Test Plate 14

What did you see? Nothing People with normal vision or total color blindness should not be able to see any number. “5” Those with red green color blindness should see a 5.

Ishihara Color Blindness Test Plate 15

What did you see? Nothing People with normal vision or total color blindness should not be able to see any number. “45” Those with red green color blindness should see a 45.

Ishihara Color Blindness Test Plate 16

What did you see? “26” Those with normal color vision should see a 26. 6, faint 2 Red color blind (protanopia) people will see a 6, mild red color blind people (prontanomaly) will also faintly see a number 2. 2, faint 6 Green color blind (deuteranopia) people will see a 2, mild green color blind people (deuteranomaly) may also faintly see a number 6.

Ishihara Color Blindness Test Plate 17

What did you see? “42” Those with normal color vision should see a 42. 2, faint 4 Red color blind (protanopia) people will see a 2, mild red color blind people (prontanomaly) will also faintly see a number 4. 4, faint 2 Green color blind (deuteranopia) people will see a 4, mild green color blind people (deuteranomaly) may also faintly see a number 2.

Ishihara Color Blindness Test Plate 18

What did you see? Those with normal color vision should be able to trace along both the purple and red lines. Those with Protanopia (red colorblind) should be able to trace the purple line, those with protanomaly (weak red vision) may be able to trace the red line, with increased difficulty. Those with Deuteranopia (green color blind) should be able to trace the red line, those with Deuteranomaly (weak green vision) may be able to trace the purple line, with increased difficulty.

Ishihara Color Blindness Test Plate 19

What did you see? Those with normal color vision or total color blindness should be unable to trace the line. Most people with red green color blindness can trace the wiggly line, depending on the severity of the condition.

Ishihara Color Blindness Test Plate 20

What did you see? Those with normal color vision should be able to trace a green wiggly line. Most people with any form of color blindness will be unable to trace the correct line.

Ishihara Color Blindness Test Plate 21

What did you see? Those with normal color vision should be able to trace an orange wiggly line. Most people with any form of color blindness will be unable to trace the correct line.

Ishihara Color Blindness Test Plate 22

What did you see? Those with normal color vision should be able to trace the blue-green/yellow-green wiggly line. Red green color blind people will trace the blue-green and red line. People with total color blindness will be unable to trace any line.

Ishihara Color Blindness Test Plate 23

What did you see? Those with normal color vision should be able to trace the red and orange wiggly line. Red green color blind people will trace the red and blue-green wiggly line. People with total color blindness will be unable to trace any line.

Ishihara Color Blindness Test Plate 24

What did you see? Congratulations, you made it to the end! Everyone should be able to trace this wiggly line. If you found this test useful or interesting, please send this page to your friends.