Definition:

A logo is a graphic identifier used to represent a brand, company, product or organisation. It may consist of a stylised name, letters, a symbol or a combination of textual and graphic elements.

In stricter terminology, a logotype or wordmark is specifically the typographic representation of a name. The English word logo is commonly used as the broader category, whereas classifications in other languages may distinguish more narrowly between text, symbol and integrated compositions.

Logo, brand and identity differences

A logo is one component of a brand system, not the complete brand. A brand comprises meanings and associations; corporate identity organises visual, verbal and behavioural elements; and the logo provides a recognisable identifier within that system.

Nor does a logo automatically communicate every value or aspect of an organisation’s personality. Its form may suggest certain traits, but meaning develops through use, communication, products and accumulated experiences. Branding manages this broader process.

The name normally precedes its graphic representation. Decisions about naming, legal availability, pronunciation and languages should therefore be addressed before the design is consolidated.

Main types of logo

Classifications vary between authors and markets. The following categories describe common relationships between text and symbols:

Wordmark: uses the written name as its main element, with an existing, modified or custom-designed typeface.
Lettermark: builds the identifier from initials, linked letters or an abbreviated form of the name.
Symbol: represents the brand through a graphic sign that may work without the name. Some classifications use the term isotype.
Combination mark: places text and symbol together as distinct elements that may also be used separately. It is comparable to the category described as an imagotype.
Emblem: integrates text and graphic form into a unit whose elements are not normally separated. Some taxonomies refer to this structure as an isologo.

These categories describe structure; they do not determine design quality. Hybrid or responsive identity systems may also use several approved configurations according to the available space and context.

Requirements of a functional logo

There is no universal form suitable for every organisation. Criteria should be evaluated according to the name, sector, audiences, media and competitive setting.

Identification: the sign should be associated with its owner and distinguished from other relevant organisations.
Legibility: textual elements need to remain understandable at the sizes and under the conditions in which they will be used.
Reproduction: the design should work across different techniques, materials and quality levels without depending on one finish.
Scalability: it should retain its essential features in both small applications and large formats.
Versatility: horizontal, vertical, monochrome or simplified versions may be required for different media.
Differentiation: it should avoid confusing similarities and undergo legal checks before adoption.

Simplicity can support recognition and reproduction, but it is not a rule requiring every logo to adopt the same minimal style. The appropriate solution is the one that handles real applications clearly and consistently.

Logo design process

Design does not begin by choosing a software package. Tools allow the work to be drawn and prepared, but they do not replace research, strategy or evaluation.

Prepare the brief: define objectives, audiences, context, restrictions, attributes and required applications.
Research references: analyse competitors, sector conventions, organisational history and similarity risks.
Explore concepts: develop typographic, symbolic and compositional alternatives before selecting a direction.
Test applications: check sizes, backgrounds, print, screens, signage and relevant accessibility scenarios.
Prepare deliverables: create vector and raster files, approved variants and usage specifications.

Selection should not be based exclusively on personal taste. Proposals need to be assessed against the stated problem, intended uses and possible registration conflicts rather than treating a preference survey as the only validation.

Logo use and maintenance

Once approved, a logo needs rules that preserve its integrity without preventing reasonable applications. These standards normally form part of the identity guidelines.

Clear space: establishes the minimum area around the identifier to prevent visual interference.
Minimum size: sets separate limits for print and screens according to legibility tests.
Approved backgrounds: specifies suitable versions and contrast levels for photographs, colours and surfaces.
Incorrect uses: documents distortion, colour changes, effects and rearrangements that alter the design.

Consistency does not require keeping an asset unchanged forever. A controlled review may be appropriate when the name, strategy or application system changes. The objective is to retain recognition and functionality, not to protect a form that no longer meets the organisation’s needs.