The luminance signal of the component color system in the NTSC video standard. The signal is composed of the following proportions of red, green, and blue:

See also B–Y, R–Y.

The vertical axis in a three-dimensional system.

See also X axis, Z axis.

The luminance and color difference signals of the component color system in the NTSC video standard. Also called YCrCb.

See Y, B–Y, R–Y, YUV.

The letter designations for luminance, luminance minus red, and luminance minus blue. YUV are the luminance and color difference signals of the component video standard for PAL. Also called YCrCb.