And 3DS screens always looked washed out kind of, it's not the colors that will tell you if IPS or TN, for example, the DS Lite have a TN screen that is superior to the IPS of the DSi XL.
To tell if you have a TN or IPS, just hold a screen with black or white, tilt the screen to look from the top of it and see whites becomes greys and blacks become whites.
Looks at mines, got a 3DS XL, both TN screens, and a DSI both TN screens, same game same place, look how more vibrant and sharp the DSi is, but then, look how the titlting is shifting the shadows of the trees.
The 3DS had neat and superb viewing angles, but the screens always lacked of definition and vibrance, the DSi had a wonderfull screen, but really not that good viewing angles, and both are TN.