Understanding Colour
Colour is a sensation and as such only exists in the brain; although we believe that we all have similar perceptions of colour we do not know that this is true. Colour is all around us, and affects our perceptions when we make decisions on objects including cars, clothes and even food.
The eye-brain can be deceived by secondary factors such as ambient illumination, background colour, sample size, observer age, mood, health and medication. Or perception can be altered by defective colour vision, which affects 8% of males and 0.4% of females.
The colour of an object depends on the light, which is used to illuminate it. A bright red car may appear brown under sodium street lighting, although the owner would still say he had a red car.
Colour perception varies from person to person, but it is estimated that we can discriminate between seven and ten millions of colours. This illustrates why it is important to ensure we are matching to an exact shade.
When working with colour we can either accept these variations or try to remove as many variables as possible. Here at VeriVide Ltd we provide a variety of solutions to achieving accurate visual and colour assessment.
VeriVide Ltd have over 40 years experience in the field of visual assessment of colour, colour science and lighting applications. Our expertise can be adapted to solve your business problems, including effective supply chain colour management.
VeriVide Ltd are experts in testing for colour deficiency and discrimination, and we also offer a range of courses from a basic understanding of colour to colour quality control and communication;
Colour Courses
Introduction to colour
- The importance of colour
- What is colour?
- Visual assessment of colour
- Colour Communication
- Electronic colour communication
Computer Match Prediction.
- Summary
- Making a database
- Practical
- How to use match prediction
- Correction Routines
- Practical
- Expert Matching
- Discussions
Quality control
- The importance of colour
- What is colour?
- Colour communication
- Colour measurement.
- Colour Difference (Quality Control)
- Sample preparation and presentation
- Tolerances
- Electronic colour communication
- Discussion
- Practical Examples and measurement.
Vision Testing
This can be supplied as a separate module or to compliment any of the Colour Courses.
Two tests are administered under daylight conditions in a light box provided by VeriVide Ltd to gain a full of picture of the colour vision of the client. Following the tests the results are analysed and full analysis and feedback will be given to the participant, including a result chart printout and a Certificate of Conformance.
The Ishihara Test is used to screen for colour deficiencies, this will be familiar to many people as Schools and Health Professionals often use it.
The Farnsworth-Munsell 100 Hue test is a diagnostic tool to evaluate colour discrimination. It is used to separate persons with normal colour vision into classes of superior, average and low colour discrimination as well as to measure which zones of colour confusion exist in colour defective people. It is especially useful to understand the level of colour discrimination of colour matchers, colour graders and quality inspectors of coloured goods.
The test consists of four trays containing a total of 85 removable colour reference caps (incremental hue variation) spanning the visible spectrum. Colour vision abnormalities and aptitude are detected by the ability of the test subject to place the colour caps in order of hue.
Customised courses
We can also tailor courses to suit your organisations specific needs.
If you would like further information on one of our courses please contactJohn Dakin on +44 (0) 116 284 7790 or email him directly at j.dakin@verivide.com.