Vincent van Gogh, seorang pelukis terkenal dari Zundert, Belanda merupakan salah satu pelukis yang menghasilkan berbagai karya lukis termahal di dunia. Aliran lukisan van Gogh yaitu post-impresionisme membuat setiap karyanya sangat berkesan karena ungkapan perasaan dituangkan di dalam lukisannya. Salah satu lukisan fenomenalnya berjudul, Portret van Dr. Gachet 1890 . Lukisan ini diteliti menggunakan metode penelitian kualitatif dengan bantuan teori Mimesis dari Plato dan teori warna dari Brewster. Foto lukisan diamati sehingga karakteristik aliran post-impresionisme di dalam lukisan Portret van Dr. Gachet 1890 dapat terbaca. Hasil penelitian memperlihatkan bahwa lukisan ini merupakan lukisan Post- Impresionisme. Perbedaan kedua lukisan tersebut terletak pada pemilihan warna dan abstraksi di dalam masing-masing lukisan. Lukisan tersebut juga identik dengan pengalaman pribadi van Gogh, yang menggunakan perasaan di setiap karyanya.

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Vincent van Gogh, a famous painter from Zundert, Netherlands is one of the most expensive painters in the world. The flow of van Gogh 39;s painting of post-impressionism makes each of his works very memorable because of the expression of feelings poured in his paintings. One of his phenomenal paintings is entitled, Portret van Dr. Gachet 1890 . This painting is examined using qualitative research methods and assisted by the Mimesis theory of Plato and the color theory of Brewster. Photographs of the paintings were observed so that the characteristics of post-impressionism flow in Portret van Dr.Gachet 1890 can be recognized. The result of this research show that this painting is a Post-Impressionism painting. The difference between the two paintings lies in the selection of colors and abstractions within each painting. The painting is also similar with Van Gogh 39;s personal experience, which uses feelings in each of his works.