In Woman in a Blue Dress, the viewer is greeted by a serene figure of a woman dressed in a deep blue gown. The background features soft, muted colors that enhance the subject's presence. Dewing's use of color creates a harmonious atmosphere, emphasizing the elegance of the figure.

The woman's pose is relaxed, suggesting a moment of quiet reflection. The painting is executed in oil on canvas, a medium that allows for rich color saturation and subtle blending. Dewing's brushwork is delicate, capturing the texture of the fabric and the softness of the woman's features. The dimensions of the artwork are approximately 76 x 102 cm, making it a sizable portrait that draws the viewer in.

The composition is balanced, with the figure centrally placed against a gentle background. Thomas Wilmer Dewing was an American painter associated with the Impressionist movement, known for his portraits of women. Woman in a Blue Dress exemplifies his focus on femininity and beauty, often portraying women in contemplative poses. An interesting fact about this work is that it reflects Dewing's interest in the interplay of light and color, which was a hallmark of his style.

The painting is currently housed in the Museum of Fine Arts Boston.