XV colour: Sony and Panasonic propagate the implementation of the expanded color under the name xvColor (sometimes just xvColor). xv YCC color space. Compared to previously used standards such as sRGB this allows a larger range of visible colors. Along with Deep Color can the color depth increased, i.e. even finer gradations and nuances are transmitted.
To understand this, you have to know that we humans can also perceive colors that today's reproduction technology cannot produce. The color space in video technology is based on the technical possibilities and defines a model within the limits that a device can display.