Anyone who has ever assembled a router setup has likely noticed the distinctive hue of the Ethernet cable—an unmistakable yellow that dates back to the earliest days of Ethernet technology. This vibrant color choice, as it turns out, is rooted in both personal preference and practical considerations, tracing back to the 1968 Chevrolet Corvette and a crucial safety concern.
Since Ethernet cables first emerged in the early 1980s, their casing has consistently been this particular shade of yellow, matching the iconic color of the classic American muscle car. The story behind this choice was revealed by Rich Seifert, one of the Ethernet cable’s co-creators, during his presentation titled “History of Ethernet: Musings of an Early Networker,” as covered by PC Gamer.
The Personal Touch Behind a Technical Standard
Seifert explained that the yellow color was more than just a random selection; it was deeply personal. “It’s my favorite color. I drove a yellow car, I have yellow furniture,” he shared, highlighting his affection for the color. His fondness for yellow played a significant role in the cable’s design.
During the period between 1979 and 1980, Seifert was working at Digital Equipment Corporation, collaborating closely with engineers from Intel and Xerox. Together, they co-authored the Ethernet specification document that laid the foundation for IEEE Project 802’s standardization efforts. Given his role in writing the specification, Seifert wielded influence over various design elements, including the cable’s outer jacket color.
This choice was not only a matter of personal taste but also served a practical purpose. The bright yellow hue made Ethernet cables easily identifiable among the tangle of wires typically found in networking setups, enhancing safety and reducing confusion. Thus, the combination of Seifert’s personal preference and the functional need for clear visibility cemented yellow as the signature color for Ethernet cables—a decision that has endured for decades.