yeah the pj specs tool says that they have the exact same colours.

you also have some inconsistent and odd shading in the piece

keep at it nonetheless!

http://www.pixeljoint.com/pixelart/77675.htm colors look very similiar to this piece, i would  list is as reference if you used colors directly from it or referenced parts of it, for example the hair.

There's a single pixel outside the outline on top of her head.

Quite nice. Could really be improved by adding some AA to the eyes and fixing the banding on the face.