Yamaha RX-V1065 Owner's Manual page 82

Glossary
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"x.v.Color"
A color space standard supported by HDMI version 1.3. It is a more
extensive color space than sRGB, and allows the expression of colors
that could not be expressed before. While remaining compatible with
the color gamut of sRGB standards, "x.v.Color" expands the color
space and can thus produce more vivid, natural images. It is
particularly effective for still pictures and computer graphics.
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