Toonwaarde
Toonwaarde is a Dutch term used in art, design, and image processing to describe the lightness or darkness of a color or area, independent of its hue. It corresponds to what in English is often called value or tonal value. In color theory, toonwaarde helps distinguish how bright or dark a color appears, which can influence perception, mood, and depth in an image.
In practice, toonwaarde is fundamental for shading and contrast. In drawing and painting, artists manipulate toonwaarde
Measurement and related concepts vary by medium. In digital imaging, toonwaarde aligns with luminance or a
See also: color theory, tonal value, luminance, grayscale, contrast.