In Samuel Alleyne Otis, Gilbert Stuart presents a dignified portrait of the subject. The painting features rich colors, primarily deep blues and warm browns, which create a sense of depth. Otis is depicted in formal attire, with a white cravat and a dark coat, suggesting his status.

The background is a muted tone that enhances the figure's prominence in the composition. The painting is executed in oil on canvas, a common medium for portraits of this era. Stuart's technique is characterized by precise brushwork and a keen attention to detail, particularly in the rendering of facial features. The dimensions of the work are approximately 76 x 63 cm, which is typical for portraiture.

This size allows for an intimate viewing experience, drawing the viewer's focus to Otis's expression. Gilbert Stuart was a prominent American portraitist known for his ability to capture the likeness and personality of his subjects. This portrait of Samuel Alleyne Otis, painted in the c. 1790s, reflects Stuart's style during the Colonial American period.

An interesting fact about this work is that Stuart created several portraits of notable figures of the time, contributing significantly to American art history. Otis himself was a significant political figure, serving as the first Secretary of the Commonwealth of Massachusetts.