The Protection of Colours as Trade Marks

Trade marks are traditionally associated with names, logos and slogans. However, modern branding strategies increasingly rely upon non-traditional trade marks, including colours, shapes, sounds and motion marks. Among these, colour trade marks remain one of the most commercially valuable — and legally challenging — forms of intellectual property protection.

Certain colours have become intrinsically linked with particular brands in the minds of consumers. Examples such as Tiffany blue, Cadbury purple and the distinctive red soles of Christian Louboutin shoes demonstrate the powerful role colour can play in establishing brand identity and commercial recognition.

Despite this commercial significance, obtaining and enforcing protection for colours as trade marks remains difficult under UK and EU law. Applicants face strict requirements concerning distinctiveness, clarity and consumer perception, while courts remain cautious about granting monopolies over colours that competitors may legitimately wish to use.

Can a Colour Be a Trade Mark?

Under the Trade Marks Act 1994, a trade mark may consist of:

“any sign capable of being represented in the register in a manner which enables the registrar and the public to determine the clear and precise subject matter of the protection afforded to the proprietor.”

This broad definition allows for protection of non-traditional marks, including:

• single colours;
• combinations of colours;
• position marks involving colours;
• and colour applied to packaging or products.

However, not every colour is capable of functioning as a trade mark.

To qualify for registration, the colour must:

1. function as an indicator of commercial origin;
2. distinguish the goods or services of one undertaking from those of others;
3. and be represented clearly and precisely.

The Difficulty of Registering Colours

Unlike logos or word marks, colours are generally considered inherently non-distinctive.

Consumers do not usually perceive colours alone as indicators of origin without extensive use and market recognition.

As a result, colour marks rarely succeed without evidence of acquired distinctiveness through use.

The courts have repeatedly stressed the importance of keeping colours available for legitimate use by competitors. Granting exclusive rights over a colour may place substantial restrictions upon market competition.

The Requirement for Clarity and Precision

One of the most important legal principles governing colour trade marks emerged from the decision of the Court of Justice of the European Union (“CJEU”) in:

• Sieckmann v Deutsches Patent- und Markenamt (C-273/00).

The court established that trade mark representations must be:

• clear;
• precise;
• self-contained;
• easily accessible;
• intelligible;
• durable;
• and objective.

These principles became particularly important in later colour mark cases.

The Libertel Decision

In:

• Libertel Groep BV v Benelux-Merkenbureau (C-104/01),

the CJEU confirmed that a single colour may, in principle, be registrable as a trade mark.

However, the court emphasised that:

• colours are not normally inherently distinctive;
• and applicants must usually prove acquired distinctiveness through use.

The court also recognised the public interest in preventing unjustified monopolisation of colours.

Importantly, the judgment confirmed that use of internationally recognised colour identification systems, such as Pantone references, may assist in satisfying the requirement for clarity and precision.

Colour Combination Marks

The courts have generally been more receptive to colour combinations than to single colour claims.

However, the arrangement of the colours must be clearly defined.

This issue was considered in:

• Heidelberger Bauchemie GmbH (C-49/02),

where the applicant sought protection for blue and yellow colours “in every conceivable form”.

The court rejected the application because it lacked precision regarding:

• arrangement;
• proportion;
• and systematic configuration.

The decision established that colour combinations must possess:

• a predetermined and uniform arrangement;
• rather than an undefined assortment of colours.

Acquired Distinctiveness

Because colours are rarely inherently distinctive, applicants usually rely upon acquired distinctiveness.

This requires demonstrating that consumers have come to recognise the colour as identifying the commercial origin of goods or services.

Evidence commonly relied upon includes:

• market surveys;
• advertising expenditure;
• duration and extent of use;
• sales figures;
• consumer recognition evidence;
• and market share data.

The evidential burden is often substantial.

The Cadbury Purple Litigation

One of the most famous UK colour trade mark disputes involved Cadbury’s attempt to protect its distinctive purple packaging for chocolate products.

Cadbury obtained registration for:

Pantone 2685C

in relation to chocolate and confectionery products.

However, the registration became the subject of lengthy litigation involving Nestlé.

The courts ultimately held that the wording of the specification lacked sufficient precision because it referred to the colour being applied to packaging in a manner that was not adequately defined.

The litigation demonstrated the importance of:

• precise drafting;
• clear representation;
• and certainty regarding the scope of protection.

It also illustrated judicial reluctance to grant overly broad colour monopolies.

The Christian Louboutin Red Sole Case

Another significant decision concerned Christian Louboutin’s distinctive red shoe soles.

In:

• Christian Louboutin v Van Haren Schoenen BV (C-163/16),

the CJEU considered whether the red sole mark constituted a shape mark or a colour mark.

The court ultimately accepted that the mark related primarily to the application of colour to a specific position on the product.

The case highlighted the increasing recognition of:

• position marks;
• and hybrid colour-position branding strategies.

Consumer Perception and Brand Association

The success of colour trade marks depends heavily upon consumer perception.

Where consumers directly associate a colour with a particular brand, protection becomes more achievable.

Examples frequently cited include:

• Tiffany & Co’s turquoise blue;
• UPS brown;
• and Telekom magenta.

However, achieving this level of recognition usually requires:

• extensive advertising;
• long-term consistent use;
• and substantial market penetration.

Enforcement Challenges

Even where registration is obtained, enforcement can be difficult.

Courts must balance:

• protection of brand identity;
• against legitimate market competition.

Disputes often focus upon:

• whether consumers are likely to perceive the colour as indicating origin;
• whether competing colours are sufficiently similar;
• and whether exclusivity would unfairly restrict competitors.

The scope of protection may also be interpreted narrowly.

Colour Marks and Passing Off

Even without registration, businesses may seek protection for distinctive colour branding through passing off claims.

To succeed, claimants must establish:

1. goodwill;
2. misrepresentation;
3. and damage.

This may arise where competitors adopt similar colour schemes likely to mislead consumers regarding commercial association.

However, passing off claims involving colours can be evidentially complex and fact-sensitive.

Practical Considerations for Businesses

Businesses seeking colour trade mark protection should:

• use colours consistently and prominently;
• maintain evidence of long-term use;
• gather marketing and consumer recognition evidence;
• and define colour specifications precisely using recognised systems such as Pantone references.

Applications should avoid vague or overly broad descriptions.

Careful drafting is essential.

The Future of Colour Trade Marks

As branding becomes increasingly visual and digital, non-traditional trade marks continue to grow in importance.

Social media, online retail and global advertising have amplified the commercial power of visual identity, including distinctive colour branding.

At the same time, courts remain cautious about granting excessive monopolies over basic visual elements necessary for fair competition.

Future disputes are likely to focus increasingly upon:

• digital branding environments;
• AI-generated visual content;
• virtual goods and metaverse branding;
• and the intersection between colour marks and broader consumer perception online.

Conclusion

Colours can serve as powerful indicators of commercial origin and may, in appropriate circumstances, receive protection as trade marks under UK and EU law. However, obtaining such protection remains legally demanding.

Applicants must overcome significant hurdles concerning distinctiveness, clarity and consumer recognition, while courts continue to balance proprietary rights against the public interest in maintaining fair competition.

The jurisprudence surrounding colour marks demonstrates that successful protection depends not only upon commercial recognition, but also upon careful legal drafting and substantial evidential support.

For businesses with strongly established visual branding, colour trade marks can represent highly valuable intellectual property assets — but securing and enforcing those rights requires strategic planning, consistency and robust legal preparation.