The rare oil painting study titled 'Madona, Christ child, St. John' after Agnolo Bronzino is a remarkable composition that portrays the Madonna looking over Saint John and the Christ child. In this scene, Christ is peacefully sleeping, while Saint John gazes at him affectionately. The artist has captured the tenderness and innocence of the moment with great skill.

The background of the painting features a dark landscape with architectural elements, providing a contrast that allows the main subjects to stand out prominently. This intentional composition technique directs the viewer's attention to the Madonna, Christ child, and St. John, emphasizing their significance within the artwork.

The arrangement of the figures forms a triangular composition, which is a well-known and harmonious formula often utilized in classical painting to convey a sense of calm and harmony. This balanced arrangement adds a sense of stability to the scene and enhances the overall visual appeal of the artwork.

The painting is attributed to K. Hart and was created in the late 20th century. It is an oil painting on canvas, showcasing the artist's mastery of this medium. The dimensions of the artwork are reported as 40 x 30 inches (102 x 76 cm), providing a substantial size that allows for detailed depiction of the figures and their expressions.

In terms of condition, the painting is reported to be in overall good condition. This suggests that the artwork has been well-preserved and retains its visual integrity.

It is important to note that this artwork is a study after the original work by Agnolo Bronzino, an influential Italian artist who lived from 1503 to 1572. The study pays homage to Bronzino's composition and technique while incorporating the style and interpretation of the artist, K. Hart.

Overall, this rare oil painting study after Agnolo Bronzino's 'Madona, Christ child, St. John' is a remarkable depiction of a tender and serene moment. The triangular composition, skilled execution, and careful attention to detail contribute to the visual impact of the artwork. Despite being a study, the painting stands as a testament to the enduring influence of Bronzino's work and showcases the talent and artistic vision of K. Hart.