Which color space is defined by the red, green, and blue additive primaries?

The RGB color space is defined by the additive color model that uses red, green, and blue as its primary colors. This color model is based on the principle of light addition, where different intensities of these three colors can combine to create a wide range of colors. In contexts like digital displays and cameras, colors are created by varying the intensity of red, green, and blue light.

When red, green, and blue are combined at full intensity, they produce white light, while the absence of all three creates black. This is particularly significant for electronic displays, where RGB is the standard color space for representing colors on screens. The RGB model is commonly used in various applications, including web design, video production, and photography, where precise color manipulation is essential.

Other options like CMYK, HSV, and HSB refer to different color models suited for specific purposes. CMYK is a subtractive color model used in color printing; HSV and HSB are color spaces that describe colors in terms of hue, saturation, and brightness, which are more intuitive for color selection but do not utilize the additive properties of RGB.