No—there isn’t a normal lens filter that can “desaturate” a scene optically while preserving brightness and neutral color relationships. Filters remove parts of the spectrum, which creates a color cast rather than true lower saturation.

For a moonlight look, the practical in-camera options are:

• adjust white balance for a cooler/blue tone
• reduce saturation in camera if your camera allows it

But those settings affect the whole exposure, so they won’t let the meadow look desaturated while the girl and glowing balloons stay fully saturated in the same single exposure.

A colored filter may emphasize similar colors and suppress others, but it won’t give selective desaturation in the way you want.

So the direct answer is: no, not with lens filters alone. If you need one part of the scene muted and another part colorful, you’ll likely need either multiple exposures/compositing in-camera if your camera supports it, or post-processing.