what does contrast in value help accomplish in this painting?

Contrast in value helps accomplish several things in a painting. Firstly, it adds depth and dimension to the artwork, creating a sense of three-dimensionality. By exaggerating the difference between light and dark areas, artists can create an illusion of various planes and volumes within the composition.

Contrast in value also helps to create visual interest and focal points in the painting. By using high contrast between certain areas, like a light figure against a dark background, the artist can draw the viewer's attention to specific elements or places of importance within the artwork.

Additionally, contrast in value can evoke different moods and emotions. Darker, low-value areas tend to create a sense of mystery, drama, or even fear, while lighter, high-value areas can convey tranquility, openness, or brightness.

Ultimately, contrast in value is a powerful tool that artists use to bring visual impact, dimensionality, focus, and emotional intensity to their paintings.