For most industrial applications, a CRI value of at least 80 the recommended lower limit. In environments where color differentiation directly affects safety or quality control—such as during inspection, sorting, or working with hazardous materials—a Ra value of 90 or higher is strongly recommended. The questions below will help you determine precisely which color rendering index is suitable for your industrial situation.
What CRI value is minimally required in industrial environments?
In short: a A CRI of at least 70 is considered the absolute minimum., but for most work environments, CRI 80 is the practical standard. Standards such as EN 12464-1 typically prescribe an Ra value of 80 for workplaces, as this offers sufficient color rendering for safe and productive work. Only for rough storage areas or outdoor perimeters without direct work tasks can CRI 70 suffice.
The color rendering index—also called the Ra value or CRI (Colour Rendering Index)—indicates how accurately a light source renders colors compared to daylight. The scale runs from 0 to 100, with 100 corresponding to perfect daylight. The higher the value, the truer colors appear under that light.
In practice, too low a CRI value means that employees misinterpret colors. This can lead to errors in recognizing color-coded pipes, assessing product color, or reading warning signals. In sectors such as heavy industry, Ports and terminals Is this a concrete safety risk?.
What is the difference between CRI 70, CRI 80, and CRI 90?
The three levels differ mainly in the degree of color accuracy. CRI 70 provides acceptable but noticeably different color rendering., suitable for basic outdoor lighting. CRI 80 offers good color rendering for most industrial tasks. CRI 90 delivers excellent color accuracy is necessary where color distinction is critical.
Concretely, it looks like this:
- CRI 70 Colors are recognizable but can look flat or slightly unnatural. Suitable for parking lots, storage sites, and perimeter surveillance where color distinction does not play a critical role in security.
- CRI 80: Colors are displayed well. The standard for production halls, workshops, loading and unloading docks, and general industrial areas. Meets the requirements of EN 12464-1 for most work tasks.
- CRI 90: Colors are displayed with high accuracy. Required for quality control, color sorting, paint shops, laboratories, and medical or chemical applications within the industry.
It is good to realize that a higher CRI value does not in itself result in more light. The Color Rendering Index says nothing about the amount of lumens or the illuminance in lux. These are determined by other specifications of the Industrial LED fixtures.
When is a higher CRI value truly necessary?
As soon as color distinction directly affects safety, product quality, or accuracy, is a higher CRI not a luxury but a requirement. This applies to tasks where employees make decisions based on color that have consequences for people or processes.
Consider the following concrete situations where a CRI of 80 is insufficient and a CRI of 90 or higher is required:
- Quality control and visual inspection of products or materials
- Working with color-coded pipes, cables, or containers with hazardous contents
- Paint spray booths, paint lines, and finishing rooms
- Sorting processes where color differences are decisive
- Laboratories and cleanrooms within industrial environments
- Environments where employees work for long periods and visual fatigue plays a role
In sectors such as the offshore and maritime industries, other factors also play a role. There, in addition to color rendering, the robustness of the fixture is crucial. For that, see the Lighting solutions for offshore and maritime operations for a more complete picture of the requirements.
Does a higher CRI influence the energy efficiency of LED?
Yes, but it's not that bad. A higher CRI value has usually a slightly negative effect on the energy efficiency of LED lighting. LED light sources with a higher color rendering index produce slightly fewer lumens per watt than comparable light sources with a lower CRI. However, in practice, the difference is limited and rarely outweighs the benefits of better color rendering.
The reason lies in the spectral composition of the light. To achieve a higher Ra value, the light spectrum must be broader and more balanced, which comes at the expense of some light output. Specifically, this means that an LED fixture with CRI 90 will produce slightly fewer lux at the same wattage than a fixture with CRI 70 or 80.
For industrial applications, this is rarely a decisive argument for choosing a lower CRI. The energy savings of LED compared to conventional lighting are so significant that the small efficiency difference between CRI classes is barely measurable in the total energy bill. More about the relationship between luminous flux and energy consumption Read in our knowledge base.
What CRI value is suitable for outdoor lighting in industrial areas?
For outdoor lighting in industrial areas, a CRI of 70 to 80 is sufficient in most cases. For areas with surveillance cameras, access control, or outdoor work, CRI 80 is the recommended choice, as it improves the recognizability of people, vehicles, and objects.
For purely functional outdoor lighting—such as area demarcation, pathway lighting, or perimeter surveillance without direct work tasks—CRI 70 is sufficient. As soon as employees work outdoors, vehicles maneuver, or safety checks are performed, CRI 80 is the minimum standard.
For harbors, terminals, and large outdoor areas, light color (color temperature in Kelvin) is also a relevant factor alongside the CRI value. A higher color temperature of 5000K or 6500K combined with CRI 80 provides a bright, sharp light that greatly improves visibility over large areas. You can read more about this on the page about light color and Kelvin.
How to choose the right CRI value for your industrial application.
The choice begins with an honest look at the nature of the work, safety requirements, and environmental conditions the specific location. Ask yourself whether color distinction plays a role in the tasks performed there, and what the consequences of an incorrect color assessment would be.
Follow these steps:
- Inventory tasks per zone. What activities are taking place? Are there visual inspections, color-coded systems, or quality checks?
- Determine the safety requirements. Are there any applicable standards or regulations, such as EN 12464-1 or ATEX directives? Also, consult the HSE manager within your organization.
- Link the CRI to the zone. Use CRI 70 only for rough outdoor locations without tasks, CRI 80 as standard for work floors and workshops, and CRI 90 for precision work or quality control.
- Combine with other light parameters. CRI works with illuminance (lux), color temperature (Kelvin), and the IP protection rating. A good lighting solution optimizes all these factors.
- Run an lighting calculation. A professional lighting calculation shows whether the chosen fixtures actually achieve the desired lux levels and CRI values in the practical situation.
The right choice also heavily depends on the industry. For work environments with extreme heat, corrosion, or other special conditions, additional requirements apply alongside the CRI value. Consider the lighting expertise for an overview of the technical knowledge involved.
Examples from practice: DFDS Terminal Lighting
A good example of how CRI choices play out in practice is the project for DFDS, a large Scandinavian shipping company with a busy terminal. The challenge was multifaceted: the lighting had to withstand the harsh outdoor conditions of a port terminal—think salty sea air, dust, and mechanical vibrations from heavy-duty vehicles—while simultaneously providing sufficient color rendering for safe traffic management, loading and unloading operations, and camera surveillance.
Armatures with a CRI of 80 were chosen, combined with a color temperature of 5000K. This combination ensures sharp, bright light that keeps vehicles, people, and signage clearly recognizable, even at night or in poor weather conditions. The armatures feature a high IP rating to withstand the salty and humid port environment, and the mounting positions were selected to ensure minimal and safe maintenance—a deliberate design choice given the operational pressure at the terminal.
Those who support this project: even for outdoor lighting on large sites, CRI 80 is not overkill, but a functional necessity as soon as people are working and cameras are monitoring. A lower CRI would have noticeably reduced recognizability and thus safety. More projects like this can be found at projects page.
How JEL Products Helps You Choose the Right CRI Value
JEL Products advises industrial organizations on selecting the right lighting solution, including the optimal CRI value for each zone or application. This isn’t just off-the-shelf advice, but a solution tailored to the specific work environment, the tasks performed there, and the standards that must be met.
What JEL Products specifically offers during the selection process:
- Custom technical lighting advice, including lighting calculations per zone
- Guidance on complying with standards such as EN 12464-1 and ATEX directives
- Fittings of our own production, designed for extreme industrial conditions
- Full support from engineering to installation and commissioning
- ISO9001 and VCA** certified working method
Do you want to know which CRI value and lighting solution best suits your industrial environment? Please contact JEL Products for a no-obligation consultation.