Logo design can only consist of typography (letter), sign or a combination of sign and typography. With typographic design (logo), designers rely on words to convey a message, paying particular attention to visual appeal. Graphics can also be monochrome, which is also a popular and effective form of solution because it is easy to remember precisely because of its simplicity. Signs can be a very powerful and compelling communication tool, conveying not just information, but mood and emotions. Designers often use a combination of signs and text to convey a message from the client to the audience, striving to strike the ideal balance between the two.