What is the antonym of word silhouette?

There isn't a single perfect antonym for "silhouette," as it depends on the context. Here are some possibilities, depending on what aspect of the word you want to contrast:

If "silhouette" refers to the outline of a shape:

* Full figure/form/image

* Detailed image

* Realistic depiction

* Colored image (if the silhouette is black)

If "silhouette" refers to the dark outline against a light background:

* Light outline against a dark background

* Reverse silhouette

* Positive image

If "silhouette" refers to a shadowy or indistinct figure:

* Clear image

* Well-defined figure

* Detailed portrait

Ultimately, the best antonym will depend on the specific meaning and context of "silhouette" in your sentence.