How to Read the RGB Picker Values?

By clicking and draging the image, an RGB picker Value window apppears. However, I'm not certain exactly what info it's displaying.
There is the X adn Y which I beliee is the resolution or axis on where you're at in the image.
Then there is the RGB, which is obviously Red, Green and Blue.
But then there is HLS and then beneath that, RGB again and beneath that, HLS again...
Can someone pelase explain what these mean and what they're used for?
Many thanks!

Hi Pat,
I must of misread your response to Dezzy. When I make color changes to my footage in SpeedGrade, and then sample the image with the color picker (left mouse click), my Blue always stay the same, even if I am adding lots of blue. I thought your response was referring to a bug in SpeedGrade, as you described the Blue staying the same. Am I experiencing a bug?
Thanks,
Chris
Patrick J. Palmer wrote:
Hi Chris,
could you describe what problem you experience? I didn't see an issue described in the original post, just a question as to what's the meaning of the color picker values (and hope that the answer above is sufficient - let me know if I am missing something here).
Thanks
Pat
chrismathewsagi wrote:
I am experiencing the same problem. Hopefully this will get worked out with an update!

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