명도 (Brightness) refers to the perception of how light or dark a color appears. It is an important aspect of color theory and is often measured on a scale from black to white. Higher brightness values indicate lighter colors, while lower values represent darker shades. In digital imaging, brightness can be adjusted to enhance the visibility of an image. Tools like photo editing software allow users to modify brightness levels, affecting the overall appearance of the image. Understanding brightness is essential for artists, designers, and photographers to create visually appealing works.