A young man turns his head over his shoulder, his gaze meeting the viewer directly from the shadows. His pale face, softly illuminated, stands out against a dark, indistinct background that recedes into near-blackness. Loose curls of light brown hair frame his forehead and cheeks, their texture rendered with delicate, fluid brushstrokes.

His expression is calm and reserved, with slightly parted lips and a faint flush on his cheeks, suggesting youth and poise. The sitter wears a high, white lace collar that catches the light, its folds and embroidered pattern subtly indicated with fine, almost translucent paint. Below the collar, a gleaming surface hints at armour, painted in broad, smooth strokes that reflect a muted greenish light.

The composition is tightly cropped, focusing attention on the sitter’s face and shoulders, while the rest of the figure dissolves into shadow. Cracks in the paint surface are visible across the face and neck, testifying to the age of the work. The overall palette is restrained, dominated by creamy flesh tones, soft browns, and silvery greys, with the background enveloping the figure in an atmospheric haze.

The artist’s handling of light is subtle, with gentle transitions between illuminated skin and the enveloping darkness, creating a sense of depth and immediacy. The background is a deep, smoky brown with no discernible objects or figures, creating a void-like effect around the sitter. A subtle highlight falls across the left side of the subject's face and collar, leaving the right side in deeper shadow.

The lower left corner of the painting shows a glint of reflected light on the curved surface of the armour, with greenish and golden tones. Fine, almost invisible lines of craquelure run throughout the painted surface, especially noticeable on the cheek and neck. The edges of the figure’s shoulder and hair softly dissolve into the darkness, with no sharp outline separating them from the background. Lord Bernard Stuart (1623–1645) is painted by Anthony van Dyck in 1639.