SYCC

sYCC is a standard numerical encoding of colors, similar to the CIE YCbCr encoding,^[2] It uses three coordinates: a luma value ${\displaystyle Y}$, that is roughly proportional to perceived brighness of the color, and two chroma values ${\displaystyle C_{b}}$ and ${\displaystyle C_{r}}$, which are roughly the "blueness" and "redness" of the hue. Each coordinate is represented by an integer with some number ${\displaystyle N}$ of bits, which is interpreted as either unsigned (for ${\displaystyle Y}$) or signed (for ${\displaystyle C_{b}}$ and ${\displaystyle C_{r}}$).

The space is defined by Annex F of the International Electrotechnical Commission (IEC) standard 61966-2-1 Amendment 1 (2003), as a linear transformation of the non-linear sRGB color space defined by the same document.

The official conversion from sYCC to sRGB may result in negative R, G, or B values; meaning that not all sYCC triplets represent colors that can be displayed on a computer screen, printed, or even perceived by the human eye.