It can be maddening trying to get an exact color match on your color desktop or office printer. One easy way to achieve this is to choose a color from a CMYK swatch book that you have printed on that device. Visit Kodak's RealTimeProof Web site to download either a letter- or A4-size CMYK swatch book. Print this PDF on your color printer, and then keep it handy when you need to specify a color for output on that device. Simply enter the CMYK values from your chosen color on the chart into InDesign, Quark, Illustrator or Photoshop.
While this will allow you to get predictable color from your laser or inkjet printer or copier, this will not necessarily be the same color you will get on another device, or on a printing press. To specify CMYK colors accurately for offset printing, use either the TruMatch Colorfinder Fanguide or the Process Color Manual.