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Black is the absence of color. In painting, however, black pigment is the combination of all colors. It is the opposite of white in both additive and subtractive color models. No color can have the same level of dark pigmentation without turning itself into black. As the visual perception of an object's color is determined by the wavelengths of light reflected by the object, objects that absorb all visual wavelengths of light appear to be black. Similarly, objects may appear "black" if they cannot reflect any available wavelengths provided by a particular light source, so it typically absorbs more light and heat than any other color.
In the subtractive color model, black could be obtained by mixing pigments, e.g. by mixing the 3 primary colors (red, green and blue) in equal proportions. This is due to the fact that subtractive colors work by absorbing light (which usually contain a mix of different wavelengths), and reflecting those that are not absorbed by the pigment. And because any color can be made by mixing the primary colors, mixing them together would result in the absorption of all visible wavelengths, therefore producing black.
In the additive color system, however, it is merely the absence of light.
Black may be interpreted as a fear-inducing color (presumably due to its association with fear of the unknown),but it may also be seen as "strength" and "courage".[source?]
In general, black can possess a negative meaning (e.g. blackbird, black bunny) or positive one ("in the black", meaning "having earned more money than initially spent"). It can also be associated with formal, elegant and high-class contexts[source?]. In heraldry, black is called "sable".
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