The Question Everyone Asks
When students first encounter trademark law, color trademarks are usually the example that makes people pause. You can own a color? Just a color?
The answer is yes — with significant qualifications. Color trademarks are real, legally recognized, and can be extraordinarily valuable. But they're also among the most difficult marks to obtain and maintain, because the law puts up specific hurdles that word marks and logos don't face.
The definitive ruling came from the U.S. Supreme Court in Qualitex Co. v. Jacobson Products Co., 514 U.S. 159 (1995). The Court held that the Lanham Act's broad definition of trademark — "any word, name, symbol, or device" — includes color alone. No carve-out, no exception. A color can be a trademark if it meets the standard requirements of distinctiveness and non-functionality.
Why Color Trademarks Are So Hard to Get
The Acquired Distinctiveness Requirement
For most types of marks, you can argue inherent distinctiveness — the mark is so unusual that it functions as a brand identifier from day one. A made-up word like "Kodak" is inherently distinctive. A random color, by itself, is not. Consumers don't encounter a red sole and immediately think "Louboutin" without years of brand exposure. They see a red sole and think red shoe.
For this reason, color marks almost always require proof of acquired distinctiveness, also called secondary meaning. You need to demonstrate that through long and exclusive use, a significant portion of relevant consumers have come to recognize that specific color as an indicator of your brand specifically — not just as a color.
What kind of evidence? Duration and exclusivity of use (years, not months), volume of sales, advertising spend, consumer surveys, and documentation of competitor recognition. Tiffany didn't walk into the USPTO and claim PMS 1837. The company had been using the color exclusively for over 150 years before registration.
The Non-Functionality Requirement
A color that serves a functional purpose — conveying information, affecting performance, or being necessary for competitors to use in their product — cannot be protected as a trademark. A green color on environmentally-friendly packaging might be functional (it communicates an attribute of the product). A red color on stop signs is functional (it communicates a traffic instruction).
The Supreme Court formulated the test in TrafFix Devices, Inc. v. Marketing Displays, Inc. (2001): a feature is functional if it is essential to the use or purpose of the device or if it affects the cost or quality of the device. For colors, courts ask: does this color provide a utilitarian advantage? Does it serve a purpose beyond identification?
Pink fiberglass insulation got a color trademark (Owens Corning, registered 1985) because there's nothing inherently useful about the color pink in insulation — the product could be any color. Yellow for safety equipment might fail the functionality test because yellow is internationally recognized as a warning color, making it useful for the product's purpose.
Famous Color Trademarks — and What They Actually Cover
Tiffany Blue (PMS 1837)
The most famous color trademark in the world. U.S. Trademark Registration No. 2,359,351 covers the robin-egg blue color for "retail store services featuring jewelry, silverware, crystal, stationery, and other items." The scope is specific — it protects that precise shade in the context of jewelry retail packaging and stores. It doesn't prevent a paint company from using the same color, or a clothing brand from making blue jeans that shade.
Tiffany controls the color so completely that they've never sold the Pantone swatch to outside parties. If you want PMS 1837, you can't buy it — it simply doesn't exist in the commercial Pantone system independent of Tiffany's arrangements.
UPS Brown (Pullman Brown)
UPS has used brown for its trucks, uniforms, and packaging since 1916. The color is registered as a trademark and the company aggressively enforces it. The "What Can Brown Do For You?" campaign explicitly made the color the centerpiece of brand identity. The registration covers the specific shade — described as Pullman Brown — in the context of delivery and logistics services.
T-Mobile Magenta
T-Mobile holds a trademark on its specific shade of magenta (Pantone 212 C) for telecommunications services. The company has pursued litigation against other telecoms — including in Germany, its home market — that have used pink or magenta branding. The trademark is narrow to telecom services; it doesn't prevent fashion brands or other industries from using similar pinks.
Owens Corning Pink
The oldest widely-known single-color trademark registration in the U.S., Owens Corning registered the color pink for fiberglass insulation in 1985. The case is a textbook example: pink fiberglass has no functional purpose (insulation effectiveness is unrelated to color), and Owens Corning had used it exclusively for decades before registration, creating strong secondary meaning.
Caterpillar Yellow
Caterpillar Inc. holds trademark rights in the specific shade of yellow used on its construction equipment. The color is so associated with Caterpillar that it functions as an immediate brand signal in the industry. Competitors can make yellow construction equipment, but they must use a sufficiently different shade to avoid a likelihood of confusion claim.
What Happens When You Try to Trademark a Color
The USPTO will almost certainly issue an office action requiring proof of acquired distinctiveness. You'll need to submit:
- A statement of how long you've exclusively used the color
- Advertising materials showing the color used as a brand identifier
- Sales figures and marketing spend demonstrating consumer exposure
- Ideally, consumer survey data showing recognition
- Declarations from company officials about exclusive and continuous use
If the examining attorney finds the color functional — or finds that you haven't adequately demonstrated secondary meaning — expect a refusal that must be addressed through argument and additional evidence.
Practical note: For most businesses, a color trademark is a long-term goal, not a day-one filing. Use the color exclusively and consistently from launch, document everything, build consumer recognition, and revisit registration after 5+ years of documented exclusive use.
Frequently Asked Questions
Can I trademark a color combination instead of a single color?
Yes, and it's often easier. A specific combination of colors in a specific arrangement is more likely to be considered inherently distinctive than a single color. The green-and-yellow color scheme used by John Deere on agricultural equipment, for example, is protected as a color combination trademark. The combination as a whole is more immediately identifiable as a brand signal than either color alone.
If I see a competitor using "my" color, can I stop them?
Only if you have a registered color trademark (or strong common law rights) in that specific shade for the same or related goods/services. Color trademarks are narrow in scope. Tiffany cannot stop a restaurant from using robin-egg blue tablecloths. The relevant questions are: how similar are the shades, and how similar are the goods/services? Likelihood of confusion is still the standard.
Does a color trademark prevent me from ever changing my brand color?
Not legally — but practically, it complicates things. If you've built acquired distinctiveness around a specific shade, a color change could weaken your trademark claim over time (by reducing the consistent use evidence). And it's a significant rebranding investment that many companies avoid precisely because the color has become so associated with their brand. Tiffany will never change to a different shade of blue.
How is a color trademark described in the USPTO registration?
The color must be identified specifically — typically by Pantone number or equivalent color specification standard — and the description of use must specify the exact context in which the color functions as a mark (packaging, products, store interiors, etc.). The filing also requires a drawing showing the mark — for a color trademark, this is typically a representation of the color with a written description of where it appears.