ROGVIB is an acronym used to represent the colors of the visible spectrum in order: Red, Orange, Yellow, Green, Blue, Indigo, and Violet. This mnemonic helps in remembering the sequence of colors as they appear in a rainbow or when light is dispersed through a prism. Each color corresponds to a specific wavelength of light, with red having the longest wavelength and violet the shortest. ROGVIB is often used in educational contexts to teach about color theory and light.