The Farnsworth Munsell 100 Hue Test is a professional colour vision acuity test for evaluating how accurately an individual can distinguish subtle differences in hue. Used across industry, science, optics, medical-related screening, engineering and quality-control environments, it helps organisations identify whether staff involved in colour-critical work have the visual discrimination needed for reliable colour evaluation.
Colour perception varies from person to person. Even experienced professionals may differ in how they see small hue shifts, especially when judging close colour tolerances in production, inspection, design or laboratory work. In colour-critical industries, these differences can influence approval decisions, supplier communication, quality control, product consistency and customer satisfaction. The FM 100 Hue Test provides a structured method for assessing colour discrimination rather than relying on assumptions about visual ability.
The test consists of four trays containing a total of 85 removable colour reference caps. The caps are arranged in incremental hue variations spanning the visible spectrum. During the test, the subject places the caps in order of hue between fixed reference points. The accuracy of this arrangement indicates the individual’s colour discrimination ability and can reveal specific zones of colour confusion.
This makes the test useful for separating individuals with normal colour vision into categories of superior, average or lower colour discrimination. It can also help identify colour vision deficiencies, including areas of reduced sensitivity or possible colour blindness. In professional use, the test is especially valuable for understanding whether a person is suited to tasks that require precise visual colour judgement.
The Farnsworth Munsell 100 Hue Test is used for evaluating inspectors of colour goods, colour graders, colour matchers, production staff, laboratory personnel, quality-control teams, sales staff working with colour-critical products and applicants for vocational training. It can also be used as an independent control for checking the validity of other colour vision tests.
The test is portable and designed to be administered efficiently, typically in around 15 minutes. The four trays are supplied in a protective carrying case, making the kit suitable for in-house testing, staff evaluation, supplier qualification, training environments and field use where controlled conditions can be provided.
The included FM 100 Hue Test Scoring Software supports analysis and documentation of results. It helps convert cap arrangement into a measurable score and can indicate where a colour vision deficiency or zone of confusion may exist. For organisations that regularly test staff, software-based scoring helps simplify administration, reduce manual interpretation effort and support more consistent records.
The test should be administered under controlled daylight conditions. Proper lighting is essential because colour vision test results can be affected by the viewing environment. Standardised daylight illumination, such as that provided by professional Pantone or colour viewing lights, helps ensure that the caps are viewed under appropriate conditions and that results are more reliable.
In industrial manufacturing, the FM 100 Hue Test supports staff selection and evaluation for colour-critical tasks. Employees involved in approving coatings, plastics, textiles, packaging, painted parts, printed materials, medical devices or consumer goods must be able to recognise relevant colour differences. Testing helps companies place the right people in the right roles and reduce the risk of subjective colour errors.
In optics, medical and scientific contexts, the test provides a recognised method for evaluating colour discrimination and identifying possible areas of colour vision weakness. It should be understood as a professional colour acuity and screening tool, not as a replacement for a complete clinical eye examination or diagnosis by a qualified eye-care specialist.
For engineering and technical environments, the test can support quality-system requirements where colour judgement forms part of inspection, calibration, material approval or product verification. It helps document that staff performing visual colour checks have been evaluated with a recognised method.
In fashion, textiles and accessories, colour discrimination is essential for matching fabrics, trims, leather, plastic components, dyes, lab dips and production samples. The FM 100 Hue Test can help assess whether design, merchandising, sourcing or quality-control staff can reliably identify subtle hue differences that may affect product consistency.
In packaging, beauty, food and beverage and consumer goods, colour affects brand recognition, category coding, product quality and customer perception. Staff who review printed packaging, labels, closures, cartons, coatings and coloured components need accurate hue discrimination to prevent approval errors. The FM 100 Hue Test supports more informed staff evaluation in these workflows.
The test is also useful for ongoing training and quality-control programmes. Colour vision can vary between individuals and may change over time due to age, health, fatigue or visual conditions. Regular or role-specific testing can help organisations maintain stronger colour-control practices and identify when a person may need additional review, training or reassignment away from colour-critical visual approval tasks.
The Farnsworth Munsell 100 Hue Test does not replace instrumental colour measurement, controlled viewing booths or formal product colour standards. Instead, it evaluates the human observer, which is a critical part of any visual colour-control system. Even with spectrophotometers and colour standards, final visual assessment often depends on people. Knowing how accurately those people perceive colour improves the reliability of the whole workflow.
For organisations that depend on precise colour judgement, the Farnsworth Munsell 100 Hue Test is a practical and established tool. It supports staff evaluation, quality assurance, training, supplier control and colour-critical decision-making across industries where human colour perception directly affects product quality.
Key Benefits
- Professional colour vision acuity test
- Four trays with 85 removable colour reference caps
- Incremental hue variations spanning the visible spectrum
- Portable carrying case for storage and transport
- Helps evaluate and rank colour discrimination ability
- Supports detection of colour vision deficiencies
- Useful for colour inspectors, graders and matchers
- Helps assess staff for colour-critical roles
- FM 100 Hue Test Scoring Software included
- Supports analysis, scoring and documentation
- Suitable for industrial, optical, scientific and QC use
- Helps identify zones of colour confusion
- Administer under controlled daylight conditions
- Useful for quality-system and staff evaluation workflows
- Supports stronger human colour-control procedures
FAQ
What is the Farnsworth Munsell 100 Hue Test used for?
It is used to evaluate how accurately a person can distinguish subtle hue differences and to assess colour discrimination ability in colour-critical roles.
What is included in the test?
The test includes four trays containing 85 removable colour reference caps, arranged in incremental hue variations across the visible spectrum.
How does the test work?
The subject places the colour caps in hue order. The accuracy of the arrangement is scored to evaluate colour acuity and identify possible zones of colour confusion.
Is scoring software included?
Yes. FM 100 Hue Test Scoring Software is included to help analyse, score and document test results more efficiently.
What lighting is required?
The test should be administered under controlled daylight conditions, such as those provided by professional colour viewing lights or daylight viewing booths.
Does the test replace an eye examination?
No. It is a professional colour acuity and screening tool. It does not replace a complete clinical eye examination or diagnosis by a qualified eye-care specialist.