Igor Pro® supports the most common color-space transformations under the ImageTransform operation. Additional color-space transformations are available via the colorSpaceConversions procedure file. For more about color conversions see Gamma FAQ)

Color-Space conversions in ImageTransform

Color transformations in ImageTransform consist of converting a three-layer wave (e.g., RGB) into another three-layer wave (e.g., XYZ).

Color-Space conversions in colorSpaceConversions procedures

The color transformations in procedures are designed to convert a single color at a time. Using optional input parameters you can use the procedures to set function variables to individual components or to print them to the history.