One, colour problem is the central issue of oil painting
Oil painting is to use color to shape the image,Great Big Canvas color is the main means of expression of oil painting.
It is good to say that sketch is the foundation of form.
In oil painting, sketch is included in color, and object's body structure, light and shade level, spatial relationship and quality sense are all expressed through color.
Oil painting tools in the use of color,Big Canvas Art color performance has obvious advantages, rich performance.
At the same time to the color requirements are more strict, higher.

In watercolor paintings, proper use of water can often mask the inadequacy of color presentation.
The pink characteristic of the color of gouache makes the color bright, gorgeous, moist, but not easy to show rich middle tone and dark tone.
In oil painting, it mainly depends on the power of color itself. Color problem is very sensitive in oil painting, and the slight deficiency and error in color will soon be exposed.
The comrade that contacted a period of time water color, water powder learns again and oil painting, often such same experience: learn water color first, water powder learns oil painting again, on colour meeting still feels more laborious, not even correct so-called "water powder taste" (refer to picture color is thinner);
On the contrary, learn oil painting first and then learn watercolor, watercolor, mostly in the color problem is not very big, mainly is how to be familiar with tool performance.
This also explains the close relation of canvas and colour.
From the perspective of the history of oil painting, it is also a process in which the expression of color and its importance are constantly enriched and developed.
Today we are exposed to more systematic and scientific painting color sketching theory, can be said to be mainly in the practice of oil painting development and summary.
Therefore, it is generally accepted that color is a central issue in painting.
To learn oil painting is to focus on the study of the rules of color modeling, cultivate a keen sense of color,Large Canvas Art and master the correct observation, analysis and expression of color scientific methods.
2. Three development stages of oil painting color
The role of color in oil painting and expression methods, there is a process of continuous development.
If large sum is made, it can be divided into the following three major stages.
From the beginning of Renaissance oil painting to the advent of impressionist painting in the 19th century, generally speaking, oil color is still in the position of being subordinate to sketch.
The color of oil painting is basically based on the inherent color and light and shade relationship of the object. When presenting the color of the object's light and dark, subject to light and shadow, it is basically the change relationship of light and shade and black and white. The whole color of the picture is unified in a certain sketch relationship.
This period of oil painting is mainly transparent painting.
Transparent painting is the first focus on the shape and light, and then to solve the color of a painting.
For example, the color of the face and hands of the characters in leonardo Da Vinci's "Mona Lisa" is very delicate and soft, but the expression method is obviously rich color gradations of light and dark.
The 17th century Flemish great painter Rubens is a famous color master, its work gives the human with the warm and colorful, the palatial sense.
He has rich color imagination, pay attention to the contrast processing of tonal and big color piece, but generally speaking he still USES sketch relation to control, control colour, it is to use light and shade relation to unify colour.
In the landscape painting of this period, this kind of color belongs to sketch, to show the inherent color and the light and shade primarily the characteristic, the performance is more obvious.
Renaissance landscape painting, although the preliminary use of color changes to show the space level of landscape, painted foreground with warm brown, middle landscape with brown green, vision with cold green gray.
However, this is almost a kind of program, which is mainly used in the light and shade relation -- close shot light and shade contrast is strong, gradually decreasing to the gray of the distant view.
This approach has been followed.
Such landscape painting looks almost monochrome sketch today, the whole color appears dark, dull and false, obviously exposed to the light of the relationship and Yang xiao under the scene of brilliant color powerless.
Of course this is not a total negation of this period of oil painting, this is from the development of oil painting color.
This kind of oil painting method also has its own characteristics. It also has strong expressive force in presenting the object's body, light and shade, space and quality sense, as well as in organizing color block contrast.
And, form style also is a variety of diversiform, be not a look, changeless.
Four hundred to appear a lot of colour masters, from the Italian Renaissance Venetian titian, to 17th century Rubens and Rembrandt, diego velazquez to 18th century goya and 19th century romantic Lord delacroix, etc., the performance of the oil painting color method, and the importance of colour in painting and expressive force, is growing, constantly improve, in the middle of the nineteenth century painting color to breakthrough laid a solid foundation.