Oil paint changed what was possible. Before it, painters worked primarily in tempera — egg-based, fast-drying, unforgiving. Tempera forced precision but punished second thoughts. Oil paint, with its slow drying time and capacity for glazing, blending, and reworking, opened up a new world of texture, depth, and luminosity. The history of Western painting from the 15th century onward is essentially the history of what artists did with that freedom.
What follows is a look at the most significant historical oil paintings — what they are, what makes them important, and what they actually show when you look closely.
A Brief History of the Medium
The oldest known oil paintings are murals in the Bamiyan caves in Afghanistan, dated to around 800 AD — well before the medium became associated with European art. In Europe, oil had been used in combination with other media since the 12th century, but it was the Flemish painters of the early 15th century, particularly Jan van Eyck, who developed oil into a full system of painting. Van Eyck applied paint in layers as thin as one thousandth of an inch, building up luminosity through transparent glazes stacked on top of one another.
By the 1500s, oil paint had become the dominant medium for almost all Italian artists. Venetian painters pushed canvas to replace wooden panels as the primary support. By the Baroque period, artists like Rembrandt and Caravaggio had taken oil’s capacity for tonal contrast and turned it into a language of dramatic psychological intensity. The Impressionists in the 19th century broke from careful layering entirely, applying paint quickly and directly to capture fleeting light. Each era found something new in the same medium.
The Paintings
1. The Arnolfini Portrait — Jan van Eyck, 1434
Van Eyck’s double portrait of an Italian merchant and his wife in Bruges is one of the earliest and most technically extraordinary oil paintings in existence. Van Eyck used multiple layers of thin translucent glazes to achieve an intensity of tone and color that had never been seen before, and he used the slow drying time of oil to blend wet-into-wet, creating subtle gradations of light on fur, silk, and skin. The detail is almost hallucinatory — the individual hairs of the terrier at the couple’s feet, the convex mirror on the back wall reflecting two figures entering the room (one of whom may be van Eyck himself), four imported oranges on the windowsill that would have been exotic luxury items. Above the mirror he inscribed in Latin: Johannes de eyck fuit hic — Jan van Eyck was here. It is both a painting and a document.
2. Mona Lisa — Leonardo da Vinci, 1503–1519
Painted on poplar wood with painstakingly thin oil glazes, the Mona Lisa is not just famous — it is technically unlike anything that came before it. Leonardo developed sfumato specifically for this portrait: soft, seamless transitions between light and shadow with no visible brushwork and no hard edges. The result is a face that appears to exist in three dimensions, breathing in a way that flat paint has no right to achieve. Leonardo kept the painting, refined it, and carried it with him until his death. It was never delivered to a patron.
3. The Last Supper — Leonardo da Vinci, 1495–1498
Not an oil painting on canvas, but a mixed-media experiment on dry plaster that used oil-based techniques — and proved what happens when an artist experiments with the wrong surface. Leonardo wanted the flexibility of oil paint: the ability to revise, layer, and refine. Fresco on wet plaster does not allow that. His workaround began flaking within decades of completion. The version that exists today in Milan is largely restoration, with very little original surface surviving. As a cautionary tale about materials, it has no equal.
4. The Arnolfini Portrait led directly to Las Meninas — Diego Velázquez, 1656
Art historians have suggested that Velázquez saw the Arnolfini Portrait when it was in the Spanish royal collection, and that the convex mirror in that painting directly inspired the mirror at the back of Las Meninas. In Velázquez’s hands, the mirror device becomes something far more complicated: in the reflection, the king and queen of Spain appear to be watching the scene — which means they are standing where the viewer stands. The painting collapses the distance between the viewer and the canvas. Velázquez appears in his own painting at the left, brush in hand, staring outward. Who is the subject? Whose portrait is this? Three and a half centuries of art criticism have not settled it. Velázquez’s brushwork — highly economical, deeply informative — has been studied and emulated more than almost any other painter’s.
5. Judith Beheading Holofernes — Caravaggio, c. 1598–1602
Caravaggio commissioned by Genoese banker Ottavio Costa, painted a scene from the Old Testament — the widow Judith decapitating the Assyrian general Holofernes — and made it visceral in a way that no biblical painting had been before. The tenebrism is absolute: the three figures emerge from total darkness as if lit by a single offstage spotlight. Judith’s expression is focused, slightly disgusted, neither triumphant nor afraid. The blood is not symbolic; it is blood. The painting was rediscovered in 1950 after being lost for centuries, and it now sits in the Galleria Nazionale d’Arte Antica in Rome. It measures 145 cm × 195 cm — large enough that the figures approach life size.
6. The Night Watch — Rembrandt van Rijn, 1642
The Night Watch is the largest and most ambitious work Rembrandt ever painted, and at the time of its completion it was unlike any group portrait in Dutch art. Dutch civic guard portraits were typically static — figures arranged in neat rows so each subscriber could be identified. Rembrandt painted his militia company mid-motion, their captain gesturing and his lieutenant stepping forward, light catching the fabric of a small girl in the middle of the crowd. The company paid different sums for the portrait and complained that some figures were obscured. It did not matter. The painting broke the genre open. Rembrandt’s ability to render form with single brushstrokes — cumulative strokes giving textural depth, combining the rough and the smooth — is at its most confident here.
7. Girl with a Pearl Earring — Johannes Vermeer, c. 1665
Vermeer produced only 36 known works in his lifetime, while contemporaries completed hundreds. This painting is not a portrait in the conventional sense — it is a tronie, a study of an imaginary figure of a particular character or type, a tradition popularized by Rembrandt from around 1630. The girl wears an Oriental turban that Dutch girls did not wear. The pearl earring is probably not a pearl: it is too large to be real, and Vermeer likely painted it from a glass drop varnished to give it a matte sheen. He rendered the pearl with only two strokes of white paint. During a 1994 restoration, old varnish was removed and a subtle highlight on the girl’s lip — overpainted in some earlier treatment — was uncovered. Vermeer had applied translucent green paint over dark underpaint to create the near-black background. The painting was bought at auction in 1881 for two guilders — roughly 24 euros in today’s purchasing power.
8. The Birth of Venus — Sandro Botticelli, 1484–1486
Technically a tempera painting rather than oil, Botticelli’s work belongs here because it set the visual language that early Renaissance oil painters chased for decades. The flowing lines, the graceful idealized figures, and the mythological subject matter directly influenced how oil painters approached secular and mythological scenes. Botticelli’s style permeates the poetic, idealized strain of Renaissance painting that oil eventually made richer and more luminous.
9. Olympia — Édouard Manet, 1863
When Manet’s Olympia debuted at the Paris Salon of 1865, the public was scandalized — not just by the nude subject, but by the flatness of the paint, the directness of the gaze, and the refusal to idealize. The woman is not Venus. She is looking at you, and she knows you are looking at her. Manet borrowed the pose from Titian’s Venus of Urbino but stripped away every classical softening device. The result was an oil painting that functioned as a provocation. It marked the point at which painting stopped aspiring to ideal beauty and started engaging with reality as it is. Impressionism and everything that followed flows from that decision.
Summary Table: Key Characteristics of Major Oil Paintings
| Painting | Artist | Year | Medium/Support | Movement | Signature Technique | Where It Lives |
|---|---|---|---|---|---|---|
| Arnolfini Portrait | Jan van Eyck | 1434 | Oil on oak panel | Northern Renaissance | Layered glazes, wet-in-wet blending | National Gallery, London |
| Mona Lisa | Leonardo da Vinci | 1503–1519 | Oil on poplar panel | High Renaissance | Sfumato, no visible brushwork | Louvre, Paris |
| Las Meninas | Diego Velázquez | 1656 | Oil on canvas | Spanish Baroque | Mirror perspective, loose informative brushwork | Prado, Madrid |
| Judith Beheading Holofernes | Caravaggio | c. 1598–1602 | Oil on canvas | Baroque | Tenebrism, extreme chiaroscuro | Palazzo Barberini, Rome |
| The Night Watch | Rembrandt van Rijn | 1642 | Oil on canvas | Dutch Golden Age | Single-stroke form, impasto, chiaroscuro | Rijksmuseum, Amsterdam |
| Girl with a Pearl Earring | Johannes Vermeer | c. 1665 | Oil on canvas | Dutch Baroque | Intimate light, tronie composition, translucent glazes | Mauritshuis, The Hague |
| Olympia | Édouard Manet | 1863 | Oil on canvas | Realism / Pre-Impressionism | Flat brushwork, direct gaze, refusal of idealization | Musée d’Orsay, Paris |
What Oil Paint Made Possible — and What Artists Did With It
The list above spans four centuries and multiple countries, but a single thread runs through all of it: each painter used oil paint to solve a problem that earlier media could not solve.
Van Eyck needed to render the texture of fur and the sheen of silk in the same painting. Oil let him layer glazes to capture each material differently. Leonardo needed transitions so soft they appeared to breathe. Sfumato required a medium that stayed workable while he blended. Caravaggio needed total darkness and concentrated light in the same composition. Oil paint’s range of tonal values from near-black to bright white, achievable in a single layer, made tenebrism possible. Rembrandt needed to suggest complex forms with economy — a single loaded brushstroke standing in for an entire surface. Oil, thick and textured, holds a brushstroke’s shape as it dries.
The Impressionists, arriving last in this sequence, inverted everything. Where the Old Masters used oil’s slow drying time to build up layers over months, Monet and Renoir used it to paint fast and wet, capturing not the finished surface of things but the light that fell on them at a specific moment. The medium was the same. The problem was different.
Oil painting is not a style. It is a technology — and the history of its greatest paintings is the history of what happens when extraordinary people get their hands on the right tool.