Tan is a bit darker than cinnamon I believe; see samples in this thread:
Also, is there a 3-letter trim code on E-types? BTW, your beautiful car features a new-looking interior. Are you sure that it is the original trim colour? And there seem to be two cinnamons in your sample…the one lower left looks closer to your car and your footstool? I’m unsure as to what I’m looking at in that sample collection, though.