Pantone/CMYK/RGB Conversion

I have an rgb color (r=108,g=147,b=108) that I need to get the best conversion to uncoated pantone but don't have access to Photoshop or equivalent program.  Can someone convert this color to CMYK and also give me the best Pantone match?
dmaloy1Asked:
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weedConnect With a Mentor Commented:
1) You will rarely find a pantone color that perfectly matches an RGB color.
2) You're comparing what you see on screen, to your pantone swatches. Screens always show some sort of color shift. Do not compare pantone swatches to what you see on screen.
3) I did the conversion through Apple's Art Directors Toolkit.
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weedCommented:
Pantone 349 is about as close as youre going to get. The conversion to CMYK is going to depend on your color management systems on the system used to convert it.
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dmaloy1Author Commented:
I have a Pantone color chart and the 349 looks much darker than the original color.  The rgb color looks like it matches better with Pantone 348 or 347 even.  Can you tell me or show the conversion method?
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dmaloy1Author Commented:
I have a Pantone color chart and the 349 looks much darker than the original color.  The rgb color looks like it matches better with Pantone 348 or 347 even.  Can you tell me or show the conversion method?
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hdhondtCommented:
There IS no conversion method between Pantone & RGB. The best you can do is compare Pantone swatches with your monitor, better still with a print produced by YOUR printer. You can also pick the CMYK values from the Pantone Solid-to-Process swatches. Note that YOUR printer will print those colours differently as it uses different inks.

As for RGB to CMYK, again there is no single conversion. You're going from 3 to 4 variables, hence the equations have an infinite number of solutions. The easiest is to enter the RGB values and convert to CMYK in an application that understands both, such as Quark or Corel. Then check the resulting CMYK values.

Note that different apps will give you different conversions. As a matter of interest, PageMaker changed conversions between versions 5 and 6. An RGB colour in a V5 doc would print differently but look the same on screen, a CMYK colour would print the same but look different on screen...
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