Heightened vibrancy refers to the use of intense, saturated colors that create a striking visual impact, making artworks more dynamic and engaging. This concept is particularly significant in Neo-Impressionism and Pointillism, where artists employed small dots of color applied in a way that allows the viewer's eye to blend them from a distance, enhancing the overall vibrancy of the piece. By utilizing this technique, artists aimed to capture the effects of light and movement in their work, resulting in a lively and radiant aesthetic.