Seeing in colour

If employees in your organisation are routinely making colour decisions based on what they can see, it may be wise to have their colour vision tested periodically. Colour Vision may be deficient from birth with a hereditary cause but can also change during someone’s lifetime as it is susceptible to being affected by the age and health of the person as well as substances they ingest such as caffeine and alcohol or medication. Here at VeriVide, alongside our colour training courses, we offer individual colour vision testing, which is always performed sensitively and discreetly. Invest in your most important asset – your people.

There are two simple non-invasive tests that we use: The Ishihara test and The Farnsworth-Munsell 100 Hue Test.

Non-invasive tests

The Ishihara Test

Assessment for colour deficiency (commonly known as colour blindness), a condition characterised by the reduced ability to distinguish different colours of the spectrum.
The test consists of 24 plates with randomised dots forming numbers that are more or less visible depending on the degree of any colour vision defect present. The full test can provide a very accurate diagnosis of some defects, particularly those causing the most commonly found red/green colour deficiencies.

The Farnsworth-Munsell 100 Hue Test

Used widely in the industry for over 40 years, this test detects colour vision abnormalities and assesses colour acuity, the ability to identify small changes in colour.

The test consists of four trays containing a total of 85 movable-coloured tiles. The user arranges the tiles in each tray in order of hue. Depending on how much misplacing occurs, colour vision aptitude can be assessed with some accuracy. This test can also diagnose deficiency in determining the difference between yellow and blue which is not possible with the Ishihara test.

Test Conditions

All our tests are performed under artificial daylight in a VeriVide Colour Assessment Cabinet. But fear not! If you do not own one of these already and want to perform the tests on your own premises, we have a portable assessment cabinet that we can bring along.


Test results are analysed by our colour experts at VeriVide and certificates are issued for each individual showing their total score and classification.


You choose! Wherever is most convenient for you. Tests can take place at your own premises, an agreed location or even at our UK HQ in Leicester.

Ensure colour accuracy in your workforce by taking a simple test at your convenience. Contact us today if you would like to know more.

Contact: Georgina Boulter at or +44 (0)116 284 7790