The RGB area of your hair is very balanced (grayscale, black), in some areas is more red, and in others it is more blue, even in the few areas reflections of your hair, but the unbalance difference is very insignificant. Dark brown is slightly unbalance to red... Jet black is slightly unbalanced to blue... Here is unbalanced very slightly to both (red/blue)...
In short, it looks to the naked eye, black.
But the factors of environmental lighting and shadows, as well as the camera used, also influence to generate slight variations.
The point is that this is not Lara's hair color. It caught my attention because you are very stickler. They edit your photos? I thought you did not. With edition can be corrected, in fact, I did when evaluating the color.