Conversion between RGB and CMY:

- e.g., convert White from (1, 1, 1) in RGB to (0, 0, 0) in CMY.

$\left[ \begin{array} {c}C\ M\ Y\end{array} \right] = \left[ \begin{array} {c... ...\ 1\end{array} \right] - \left[ \begin{array} {c}R\ G\ B\end{array} \right]$

$\left[ \begin{array} {c}R\ G\ B\end{array} \right] = \left[ \begin{array} {c... ...\ 1\end{array} \right] - \left[ \begin{array} {c}C\ M\ Y\end{array} \right]$

• Sometimes, an alternative CMYK model (K stands for Black) is used in colour printing (e.g., to produce darker black than simply mixing CMY). where