Vibrancy is a term that means many things in many settings. To color, vibrancy is a lively, bright, rich, energetic hue. The use of vibrant colors in a project also extend that feeling. Keep the tone of your project in context with the colors you choose.
Vibrant colors on a monitor are even more vivid as colors on a monitor are mixed with light, lending even more vibrancy than usual.
Vibrant colors in the physical world are often harder to mix and use and often should be used in pure states. This means that we do not overmix them, thereby, dulling them down.2013 Tracy Berry