Context is crucial ! 
Magic Colors?
Let us see one other example, and again, right here on your browser. This time, we of course depend on your graphic card and display...so we see the very same colors.
But let us assume we do see the very same colors. And should you have any difficulty in seeing what is referred to below, try taking a distance from the screen – the greater the distance, the better your chance of seeing what will be at stake in this example.
So, please glance at the color teal on both the Tables below, Table-1 and Table-2.
Do you derive precisely the same meaning (that is, hue, brightness, etc., in this case) for the color teal showing in either Table?
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Assuming that your display shows you precisely what mine does, you will notice that Teal-1 (the teal color in Table-1) appears slighly dismayed or lighter, as compared to Teal-2. In other words, Teal-2 appears a bit darker or sharper than Teal-1.
Additionally, the Table Cell containing Teal-1 might appear to you slighly wider (i.e., longer, horizontally speaking) than the Table Cell containing Teal-2.
Of course, by now you must be ready to assume that Teal-1 and Teal-2 are precisely the same color, and that the Table Cells holding each are precisely the same width.
And, yes, you assume correctly! Teal-1 and Teal-2 are 008080, in hex value, or 0,128,128, in RGB.
What makes the teal color look different? That is, what makes us experience Teal-1 and Teal-2 as slightly different? Can you tell? I bet you can, by now.
It is the group of colors surrounding these two instances of the 'same' teal, that which makes each instance of the teal color to appear different!
This group of colors is none other than the context in which the teal color finds itself immersed.
So, take a color in isolation, and you have an absolute color. Consider the color in context, whatever the context may be, and the color is likely to vary, according to the context it is immersed in.
A special comment is in order, before we move on: since experience is real to the experiencer, we might arguably refer to the teal color in Table-1 and Table-2, above, as the very same teal... For it would only be truly so, as far as our experience goes, if we were to look at the color all by itself !
If you try covering the other colors on both tables, above, you will see that the teal actually looks the very same!
But, as soon as you see the entire tables again (i.e., the teal patches within their contexts!), you once more notice
one instance of teal on Table-1 and a different instance of teal on Table-2,
or so our eyes seem to tell us – i.e., our experience of looking at these two Table Cells painted in teal leads us to derive the following interpretation (meaning!):
they are different instances of teal.
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