Simplicity, recognition, and purpose are key principles for an effective logo. Simple logos that are unique and meaningful are easier for people to remember and identify the brand. Logos like Coca Cola and Nike are easily recognized worldwide because their designs are simple yet distinctive. An effective logo clearly communicates a company's core message and allows customers to identify with the brand through graphical elements and color. Choosing colors for the logo should correlate to the company's profile. A logo plays an important role in marketing, advertising, and building a company's brand image.