Good flag design usually aims for something memorable, recognisable and meaningful. The best-known flags often rely on a small number of colours and simple shapes.
Start with identity
A flag normally begins with a story or identity: a country's history, geography, political tradition, culture or national symbols.
Keep it recognisable
Flags need to work at different distances and sizes. Strong shapes and high contrast make a design easier to recognise.
Use meaningful colours
Colours may come from historical banners, political movements, natural features, religious traditions or heraldry.
Avoid unnecessary detail
Detailed artwork can be meaningful, but it becomes difficult to reproduce accurately. Many successful flags therefore use simple geometry.
Proportion matters
The official proportions of a flag affect how it looks when displayed. Some countries use unusual shapes or ratios as part of their national identity.
A flag is a visual shortcut
The ultimate purpose of a flag is communication. A successful design lets people recognise a place quickly while carrying enough symbolism to tell a story.