RGB to CMYK conversion

Hi,

I need your expertise asap.

Yesterday i have finished a logo for my friend Bob in Corel Draw X4.
Made it in CMYK color mode. Used 3 nuances of green color previously given to me vith RGB values. My Corel change it to CMYK. I sent the file to Bob.
He has Corel Draw X5. When he opened the file and checked the CMYK values he was surprised because they were different from mine.
I immediately found an on-line RGB to CMYK converter to check which data is more valid when i got totally different CMYK values.
Now i am truly worried and don't know what to think.

Here are the values:

BOB

RGB 116/195/101
CMYK 60/0/84/0

RGB 41/171/135
CMYK 80/7/64/0

RGB 144/238/144
CMYK 42/0/63/0



ME

RGB 116/195/101
CMYK 31/0/37/24

RGB 41/171/135
CMYK 51/0/14/33

RGB 144/238/144
CMYK 37/0/37/7



ON LINE CONVERTER

RGB 116/195/101
CMYK 40/0/48/23

RGB 41/171/135
CMYK 76/0/21/33

RGB 144/238/144
CMYK 39/0/39/66


Please help.
Thank you very much.

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  • Andrej Apostolov said:
    ON LINE CONVERTER

    First trash that crap.

    Ok color conversions require that the source and destination files be tagged so the problem with your X4 file to X5 is most likley the source RGB space in X4 is different then X5.  Also the color engines and rendering intent may be different.  My books at www.graphictechnology.com cover this for X4 and older versions and X5.

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