In Portrait of Three Children as Ceres, Ganymede, and Diana, three children are depicted in a lush, verdant setting. The colors are vibrant, with rich greens and soft pastels that create a playful atmosphere. Each child is dressed in elaborate costumes representing mythological figures: Ceres, Ganymede, and Diana.

Their expressions are lively, capturing a sense of innocence and joy. The painting is executed in oil on canvas, a common medium during the Dutch Golden Age. The artist, Nicolaes Maes, is known for his ability to capture the subtleties of light and texture. The detailed costumes and the naturalistic portrayal of the children reflect the artist's skill in rendering fabric and skin tones.

The composition is balanced, with the figures harmoniously arranged in the foreground against a softly blurred background. Nicolaes Maes was a prominent Dutch painter in the 17th century, often focusing on portraits and genre scenes. This work is interesting as it combines the innocence of childhood with classical mythology, a theme that was popular among artists of his time. Maes was a pupil of Rembrandt, which influenced his style and technique.

The painting showcases not only the charm of the subjects but also the artist's mastery of light and shadow.