Why are kuler colors different to Photoshop and Illustrator?

When I make some colours in kuler, I get RGB and CMYK numbers for them.
When I enter the RGB into Photoshop I get different CMYK values.
When I enter the CMYK into Illustrator, I get different RBG values.
Which do I believe??
I guess that this must be something to do with colour profiles. Can anyone advise please?
Thanks
P.S. I did ask this before in the kuler forum but that forum is very quiet .

rgreen001 wrote:
Thank you.
I'm 'happy' with the idea of colour spaces. But does anyone know what colour space kuler is working to when it translates rgb - cmyk? I can't seem to see that anywhere, or how to change it.
If you can't change it, it's worthless! You have to specify both the RGB color space and CMYK color space only after which you get the CMYK values you need. Alter either description and you'll end up with different values.

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Well, my suggestion in post #13, was to help me find out what the cause of your problem is. It doesn’t solve your problem permanently but temporarily, only for the current session of Photoshop or Illustrator by making these programs show your image without applying any color management conversions. So, you have to do this every time you open such files in these programs.
If you want to understand what is going on and be in control, you have to go through a lot of walls of text unfortunately .
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First of all sorry for my english
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idunnoisok wrote:
I recently installed Photoshop and Illustrator CS6 and they tend to lag even on just during normal work operations like zooming, opening a file, selecting a tool, browsing menus etc etc.
... And I got 30GB left on my hardrive which is little but I believe is enough.
So I cannot believe this slow performance is due hardware limitations. There must be some driver issue or something else.
Anyone knows why CS6 is so slow?
Software version:
Photoshop CS6 13.0.1
Illustrator CS6 13.0.0
My Specs:
Os: Snow Leopard 10.6.8
Cpu: Intel Core i7 2.3 GHz
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
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Why are kuler colors different to Photoshop and Illustrator?

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