How can a çobalt blue glass help us to see violet and blue light?

Cobalt blue glass contains cobalt salts that absorb certain wavelengths of light while allowing others to pass through. Specifically, it absorbs yellow and red wavelengths, which enhances the visibility of blue and violet light. This selective filtering creates a vibrant contrast, making blue and violet hues appear more vivid to the observer. Thus, using cobalt blue glass can improve our perception of these colors in various lighting conditions.