Colorful literally means full of color, especially a lot of different bright colors. It can also be used in a figurative way to mean rich with interesting or vividly depicted elements, such as characters or events. Used as a synonym for the literal sense, vibrant means vivid, that is, strikingly bright or intense in color. Vibrant is related to the verb vibrate, a connection that makes more sense with some other meanings: vibrant can also describe things that are pulsating with vigor and energy (one might say vibrating), such as a vibrant city, and even personalities that are energetic and full of vitality. Use of the word vibrant to describe something that is brilliantly colorful suggests that the intensity and array of hues has an energizing or stimulating effect.