ppmcie
Draw a CIE color chart as a PPM image. tldr-pages
On several platforms
Several platforms
Draw a CIE color chart using the REC709 color system as a PPM image
ppmcie >path/to/output.ppmIdentifySpecify the color system to be used
ppmcie -cie >path/to/output.ppmIdentifySpecify the location of the individual illuminants
ppmcie -red xpos ypos >path/to/output.ppmIdentifyDo not dim the area outside the Maxwell triangle
ppmcie -full >path/to/output.ppmIdentify