ppmcie
Draw a CIE color chart as a PPM image. More information: https://netpbm.sourceforge.net/doc/ppmcie.html.
- Draw a CIE color chart using the REC709 color system as a PPM image:
ppmcie > path/to/output.ppm
- Specify the color system to be used:
ppmcie -cie|ebu|hdtv|ntsc|smpte > path/to/output.ppm
- Specify the location of the individual illuminants:
ppmcie -red|green|blue xpos ypos > path/to/output.ppm
- Do not dim the area outside the Maxwell triangle:
ppmcie -full > path/to/output.ppm