New Release of the RGB Anomaloscope Color Blindness Test

I released the first version of the RGB Anomaloscope about a half a year ago. Since then more than 15’000 tests have been taken from many thousand colorblind and not colorblind people all around the world.

During this time I learned a lot more about this test and that’s why I updated it. So today I would like to announce the second release of the RGB anomaloscope color blindness test. It is still not like a real anomaloscope because of the three color limitation of computer displays (RGB). But I hope with this improvements we will get some better results and can give you a better prediction of the severity and type of your red-green color blindness.

The following attributes of the test have been adjusted:

  • The to be matched colors have all the same brightness now. This makes the result easier for comparison.
  • Instead of matching red or green to a yellow color, you have to match now some sort of yellow to different red-green mixtures. This gives a better readable test result.
  • To get a more precise test result, the selection of the last color matches is based on your ongoing test.
  • The test shows now a line instead of only circles. With this adjustment you can easier spot your personal result.

The most important adjustment is based on the equal brightness of the colors to be matched. This should make it easier to spot red-blind compared to green-blind people. If you have some sort of red-blindness, the green color shades look much brighter than red ones. And this is only true for red-weakness or red-blindness.

Enough of talking, just check out the new RGB Anomaloscope Color Blindness Test. Hope you like it.

2 responses on “New Release of the RGB Anomaloscope Color Blindness Test

  1. Jonathan Glenny


    1. A major problem arises from the persistent and inappropriate use of the term ‘colour blindness’. Colour blindness, as we all know, is extremely rare, but the impression is given, by those who ought to know better, that a large number of people, predominantly male, have a serious problem. In reality, such people, until tested, are unaware of any shortcoming and experience no difficulty with colour identification in any normal activity.

    2. Mankind is the only species using red as the danger signal; all others use yellow or yellow and black; red usually indicates lunch.

    3. In my experience, a colour vision deficiency is often offset by having substantially better than average night vision; a far more valuable asset but, because it is not ‘normal’, the establishment seems to have difficulty handling it. Night vision ought to be tested in conjuntion with colour vision when assessing a candidate’s suitability for navigation at sea or in the air at night. I have not so far come across anyone with ‘normal’ colour vision whose night vision is not, in my view, poor.

    Thank you for your time.

    Kind regards,