how do I find the RGB of my skin?

[jenkins Beverly]

how do I find the RGB of my skin?

[Rolig Loon]

Your skin does not have a single uniform color.  If it did, you would look like a pasty model.  Look at yourself (in SL or in RL).  Your skin has wrinkles and blemishes, shading of various sorts, and its overall color changes with the angle, intensity, and type of lighting around you.  You can certainly open your Develop menu (CTRL + Alt + Q  -- You may need to do CTRL + Alt + D first) and then choose Show Info >>> Show Color Under Cursor to get a display of the RGBA under your cursor,  When you do that, though, you'll see that the numbers hop all over the place.  The best you can do is a rough average, which is about all you can do by using the color picker, your eyeballs, and gut instinct too.