Scarlett

Scarlet is so steadfast that it was one of the most difficult dyes to remove from clothing. The firmest of dyes, not easily washed out.

Scarlet has symbolized wealth and power, both politically and religiously since ancient Bible times. The color was a status symbol in the Roman Empire.

The Bible states that warriors wore clothes of Scarlet.

The meaning of Scarlett isn't red, although it has that association via the Scarlet spelling which refers to the red colouring. Previously scarlet just denoted a very expensive type of woolly cloth which came in a variety of colours, the most prized being red.

I don't know why, because it looks like 'little scar', but there's something very likeable about this name - the two Ts are cute. I think it would be better on an American, though, as 'scarlet woman' is a term for prostitute in the UK, which is rather off-putting. It also makes me think of Captain Scarlet. :)