Decoding Ethernet Cable Colors: What Do They Mean?
Updated at Dec 30th 20241 min read
When you think of Ethernet cables, the image of a transparent RJ45 connector attached to a blue cable probably comes to mind. However, Ethernet cable color options are available in various shades, indicating multiple uses or functions. In this article, we'll explore what different Ethernet cable colors mean and why they matter in networking.
Are There Standards for Ethernet Cable Colors?
There isn't a universal standard that dictates which colors should be used for specific types of Ethernet cables. Various organizations like the International Trade Association and the IEEE (Institute of Electrical and Electronics Engineers) provide guidelines, but these are not strict rules. Ethernet cable colors often vary based on the industry, the country, or even the specific network setup. While there isn't a globally accepted standard now, ongoing efforts by associations like TIA (Telecommunications Industry Association) and IEEE may eventually lead to one.
What Do Different Ethernet Cable Colors Mean?
While TIA provides guidelines suggesting the importance of labeling and color-coding, manufacturers are not required to follow them rigidly. However, there are some common practices of Ethernet cable colors in the industry:
Appearance | Ethernet Cable Color | Usage |
![]() | Gray | Often used for general Ethernet connections, like those in homes and businesses. |
![]() | Green | Typically used for crossover connections, which link different computers or devices directly. |
![]() | Yellow | Commonly found in Power over Ethernet (PoE) setups, delivering power alongside data through the same cable. |
![]() | Blue | Frequently used for connecting to terminal servers, which allow multiple systems to connect to a local area network (LAN) without extra hardware. |
![]() | Black | Usually designed for outdoor use, made with weather-resistant materials to withstand various environmental factors. |
![]() | Red | Commonly used with VoIP phone systems or other emergency communications systems. |
![]() | Orange | Might be used for analog non-data connections. |
![]() | Purple | In some cases, used to identify specific network areas or testing networks, though usage may vary. |
![]() | White | Commonly used for various general applications, including office and home networks. |
Note:
The use of color-coding systems may vary depending on the specific needs of the business.
The color of the cable's outer jacket doesn't affect its performance.
Ethernet cable colors should not be confused with the color coding of the internal wires in RJ45 connectors.
Why Is Ethernet Cable Color Coding Important?
Using color-coded Ethernet cables offers several benefits, especially in network management and maintenance. Here are some key advantages:
Increased Efficiency: Color-coding makes it easier to quickly identify and troubleshoot network issues. For example, if your company uses red Ethernet cables for its security systems, IT staff can quickly locate the proper cables when problems arise, leading to faster resolution.
Prevents Miswiring: Color coding helps reduce the risk of connecting the wrong wires, especially in complex network setups. By distinguishing cables based on their purpose, you can avoid common wiring mistakes.
Standardization and Consistency: A color-coded system provides a standardized approach to network management, making it easier for different technicians to work consistently. It also simplifies training for new team members or external service providers, reducing the time and cost associated with onboarding.
Enhances Network Security: Using specific colors for cables that connect to critical systems or confidential networks helps quickly identify sensitive areas, improving overall network security.
Aesthetic and Organized Appearance: Color-coded cables not only make the network easier to manage but also give your server room or wiring setup a more organized and visually appealing look.

Compatibility and Scalability: A well-documented color-coding system makes it easier to expand or upgrade your network in the future. It simplifies the process of adding new devices or reconfiguring the network by allowing you to integrate new cables with existing ones seamlessly.
The above highlights the role of Ethernet cable color coding in general enterprise cabling. To learn about its application in data centers, refer to FS Cable Color Coding Management Solutions for Data Center Cabling Systems.
FS Offers Ethernet Cable Color Customization Services
FS offers comprehensive customization services for various Ethernet cable parameters, including cable type, outer jacket material, shielding type, and length. In addition, FS provides tailored solutions for Ethernet cable colors, allowing you to select the color that best suits your needs. Here's a table detailing the available color options for different types of patch Ethernet cables:
Cable Category | In-Stock Colors | Custom Colors |
Cat5e | Blue/Gray/Black/Green/Red/White/Brown | Blue/Black/Green/White/Yellow/Red/Gray/Orange/Purple/Pink |
Cat6 | Blue/Gray/Black/Green/Red/Yellow/White/Purple/Brown | |
Cat6a | Blue/Gray/Black/Green/Red/Yellow/White | |
Cat7 | Blue/Black | Blue/Black/White/Red/Purple |
Cat8 | Off-White | Blue/Black/White/Off-White/Red/Gray/Purple |
Conclusion
Ethernet cable color coding can significantly enhance the efficiency and organization of your network infrastructure. While no universal standard exists, selecting Ethernet cable colors that align with your organization's needs and industry practices can ensure smoother network operations and easier troubleshooting. Thoughtful planning in Ethernet cable color coding will lead to a well-organized and efficient network setup.