A woman sits upright in a large armchair, her figure illuminated against a deep, dark background. Her gaze meets the viewer directly, and her expression is calm and composed, with a faint, knowing smile. She wears an elaborate black dress trimmed with delicate lace at the neckline and sleeves, which is rendered with a lively, textured brushwork that suggests the richness of the fabric.

Her left hand rests on her lap, displaying a ring with a red stone and a bracelet, while her right hand holds a closed book, its cover a muted green. The armchair is upholstered in a pale, patterned fabric, its soft folds and subtle shadows painted with fluid, confident strokes. Behind her, the background is a velvety, almost abstract darkness, which sets off her pale skin and the shimmering pearls.

The artist pays careful attention to the sitter’s face, capturing the gentle flush of her cheeks, the fine lines around her eyes, and the silvery tones in her hair, which is swept up in an elegant style. The composition is balanced and dignified, with the sitter placed centrally and her figure framed by the sweeping lines of the chair and her dress. Subtle blue-green highlights in the lower part of her gown add depth and a touch of color to the otherwise restrained palette.

The surface of the painting reveals loose, expressive brushwork in the background and clothing, contrasted with the more precise handling of the face and jewelry. A signature reading 'J. Sorolla' appears in the lower right corner, confirming the artist's hand. Portrait of Frances Tracy Morgan is the work of Joaquín Sorolla, as stated in the title and artist line.

The painting’s subject, Frances Tracy Morgan, is named in the title, indicating her importance as the focus of the composition.