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Getting your product's color correct is a fundamentally important part of the manufacturing process.
From our years in this field, we have seen that ensuring color accuracy from the very beginning prevents significant costs and complications down the road. That is why a reliable method for visual color evaluation and visual color assessment is so critical.
While instrumental measurements provide useful data, we are convinced the human eye is the definitive test for catching the subtle color variations that customers will notice.
We find that a primary source of production inconsistencies is often the absence of a standardized process for visual color assessment. Without a clear system, evaluation becomes an exercise in guesswork that leads directly to costly, avoidable errors that impact your business in several ways:
- Inconsistent Appearance: A product may appear flawless under factory lighting, only to look like a completely different shade in a retail store or a customer’s home. This common phenomenon is a direct result of an incomplete visual color evaluation.
- Significant Financial Loss: We're not talking about minor issues. A poor color match can cause rejection rates of 5-10% or more. This translates into wasted materials, lost labor, and a direct hit to your profitability.
- Real-World Failures: These problems have tangible consequences. Think of a plastic bumper that looks like a perfect match to a metal car door, only to appear mismatched in daylight. Or consider entire rolls of luxury textile being rendered useless because of inconsistent color.
- Damaged Brand Reputation: Ultimately, inconsistent color is perceived by the consumer as poor quality. This can erode trust and damage the reputation you've worked so hard to build.
To eliminate guesswork, we always recommend a two-part strategy: a controlled environment and a professional methodology.
The first part is creating that controlled environment with a dedicated color assessment cabinet. A professional tool, like our versatile Qualitest QT series of Color Light Boxes, is designed to eliminate the variables that lead to inaccurate results. It provides a reliable foundation for every visual color evaluation by:
- Creating a Standardized Viewing Area: It seals off the sample from inconsistent ambient factory or office lighting, ensuring the color you see is the true color of the product.
- Preventing Color Contamination: With a neutral gray interior, it stops any nearby colors from reflecting onto your sample and skewing your perception, creating a reliable baseline for every visual color assessment.
- Simulating Real-World Conditions: It allows you to switch between multiple, standardized light sources. This is critical for checking how a product’s color will appear in different environments—from daylight to a retail store—letting you spot potential issues before they become costly problems.
While the right equipment is essential, it's only half of the solution. Your process must also align with established industry standards for visual appraisal.
Related article: The Professional's Guide to Color Consistency
Having the right tool is one thing; using it effectively is what produces reliable results. Here, we'll go into more detail on the eight best practices we share with our clients for a flawless visual color evaluation and visual color assessment process.
This is the absolute foundation of accurate visual color evaluation. The lights in your office or on the factory floor have their own color cast and change throughout the day.
The main goal is to check samples under multiple, standardized light sources to spot metamerism. Our Qualitest QT series of Color Light Boxes makes this simple by letting you switch between required illuminants with the press of a button.
This is a small but critical technical step. The lamps in a professional light booth need a few minutes to reach their specified output.
If you make a judgment the second you turn the lights on, they may be slightly off-color, which could lead you to incorrectly approve a sample. We advise treating it like any other piece of precision equipment: give it a moment to warm up before use.
Our brains perceive color relatively; a color is always judged in relation to the colors surrounding it.
A neutral gray background acts as a constant baseline that ensures you are seeing the sample's true color. All our color assessment cabinets feature a non-reflective, Munsell Neutral Gray interior for precisely this reason.
The angle you view a sample from can dramatically alter its appearance, especially for materials that are not perfectly matte. The industry standard is typically a 45-degree angle of observation to create a repeatable process for your visual color assessment.
A light booth provides an enclosed and consistent space, making it far easier to maintain this geometry.
Place your production sample so it is physically touching your master standard. This creates a seamless edge and removes any distracting gaps, allowing for an immediate and direct comparison.
For an extra layer of certainty, we also suggest reversing the positions of the samples to see if the perceived difference remains the same.
Your entire visual color evaluation process is built on the accuracy of your master standard. If your standard has faded or been damaged, your process is fundamentally flawed.
We stress to our clients that master standards must be protected from prolonged exposure to light, heat, and excessive handling.
The operator is a key part of the visual color assessment. If you walk from a brightly lit office into the controlled light of the booth, your eyes need a moment to adapt.
This neutral adaptation period, usually about a minute, allows your eyes to "reset" to the conditions inside the booth, ensuring that your perception isn't being skewed.
In the first 5 to 10 seconds of viewing, you get the purest perception of a color before your brain begins to over-analyze. Staring at a color for too long can cause you to become desensitized to small differences.
The consistent, high-quality illumination in our booths is designed to give you the confidence to make quick, accurate pass/fail decisions.
At Qualitest, we understand the realities of budgeting for quality control equipment. We believe that professionalizing your visual color evaluation process should not come with a prohibitive price tag.
That is why we offer a range of cost-effective light booths, from our versatile Color Light Box - QT series to other specialized color assessment cabinets.
Our solutions provide the standardized viewing conditions necessary to make reliable, color-critical decisions during your visual color assessment. Explore our collection of light booths and discover how our cost-effective products can help you improve your quality control, reduce waste, and protect your brand's reputation.
References
Chen, W., Huang, Z., Liu, Q., Pointer, M., Liu, Y., & Gong, H. (2020). Evaluating the color preference of lighting: the light booth matters.. Optics express, 28 10, 14874-14883. https://doi.org/10.1364/oe.390353
Nyitrai, Á., Urbin, Á., Nagy, B., & Sipos, L. (2022). Novel approach in sensory color masking: Effects of colored environments on chocolates with different cocoa content. Food Quality and Preference, 95, 104363. https://doi.org/10.1016/j.foodqual.2021.104363
Mukthy, A., Vik, M., & Viková, M. (2021). A Comparison of Two Different Light Booths for Measuring Color Difference of Metameric Pairs. Textiles. https://doi.org/10.3390/textiles1030030
Pecho, O., Ghinea, R., Alessandretti, R., Pérez, M., & Della Bona, Á. (2016). Visual and instrumental shade matching using CIELAB and CIEDE2000 color difference formulas.. Dental materials : official publication of the Academy of Dental Materials, 32 1, 82-92. https://doi.org/10.1016/j.dental.2015.10.015
Tasca, J. (1999). Visual Color Matching and the Importance of Controlling External Variables. **, 185-190. https://doi.org/10.1016/b978-188420778-5.50024-3
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