Need Some Help On This 2 Cent Washington Color Identifcation

I think it is a lake. Its not a carmine that is for sure.
Perforation 11-11
18.5 w
22 h

Not close to lake in my view. Lake is bluer. Your stamp has pink notes. I call it carmine. See the following for comparisons.

http://www.usphila.com/us/stamp/pri...t-406-page-1

Monitors and scanners differ in color calibration and it is notoriously difficult to reach agreement on shade in an internet forum. However, if you have never seen a true lake stamp in person, you should do so, and it will completely change your perspective on identifying the shade. A reasonable substitute is an auction catalog from one of the high-end auction houses with top-quality glossy color photos.

I concur with cjpalermo on the color assessment.

Once you have seen a stamp of the color of lake you will never forget the hue it presents in comparison of other stamps of similar design.

I say design, because I have seen variations of lake from one design to the next, but comparatively it is virtually the same color.

Though I have come across some stamps that have oxidized and present just such a lake colorization.

You may wish to purchase the book "Scott Specialized Color Guides for U.S. Stamps" - it has proven very helpful for me in the past.

Regards,
Stampalotapus

Looks like a carmine or carmine rose to me, not carmine lake or lake.