1. Simplicity
A good logo can be drawn from memory by someone who saw it once. Simple marks reproduce at any size, in any medium, and are recognised faster. Test: shrink it to 16 pixels. If it turns to noise, it is too complex.
2. Memorability
Distinctive enough to stick after one exposure, which usually comes from one clear idea rather than from decoration. Test: show it to five people for three seconds, then ask them to describe it an hour later.
3. Timelessness
Trends date. Gradients, glossy buttons and the swoosh all had their year. A logo that avoids the current fashion looks the same in a decade, which saves a rebrand. Test: does it resemble what every startup launched this year looks like? If yes, it will look old soon.
4. Relevance
The mark should feel right for the industry and the audience without being literal. A law firm and a toy brand should not share a tone. Relevance is about feeling, not about drawing the product; a bank does not need a coin. Test: describe the brand in three adjectives, then ask whether the logo evokes them.
5. Versatility
It works in one colour, reversed on dark, tiny on a favicon, huge on a sign, embroidered, engraved. A logo that only works in full colour at large size is a picture, not a logo. Test: mock it on a business card, a phone screen, a shop front and a black t-shirt.
| Quality | Quick test | Common failure |
|---|---|---|
| Simplicity | 16px render | Too much detail |
| Memorability | Recall after an hour | No central idea |
| Timelessness | Resembles this year's trend? | Effects and fashions |
| Relevance | Three adjectives match? | Literal or off-tone |
| Versatility | One colour, dark, small, large | Colour-dependent |
Common questions
- What makes a logo bad?
- Usually one of five things: too complex, forgettable, trend-dependent, wrong in tone for the business, or unusable in one colour or at small sizes. Most bad logos fail on simplicity first.
- Does a logo need to explain what the business does?
- No. Apple, Nike and Shell do not depict their products. A logo needs to be recognisable and appropriate; the name, tagline and website explain the business.
- How often should a logo be redesigned?
- Rarely, if it meets the five qualities. Refresh details every decade or so; redesign only when the business itself has changed or the original was weak.
