Does any prawn know the color principle of gouache?

1. Intermediate tone = intrinsic color

2. Bright part = intrinsic color+light source color;

3. Dark part = intrinsic color+environmental color

Gouache is the same as sketch, and it has a black-and-white gray relationship. After copying a successful gouache, you can see that the black-and-white effect is a perfect sketch. The relationship with sketch, first of all, is to be accurate in shape, simply speaking, it is like painting.

then there is the structural proportion, whether it is full in the picture. Whether the picture is complete.

have volume. Volume represents the thickness of the object, and the performance of volume should be based on understanding the structure.

the difference between color and sketch is that sketch is rational, while color is emotional. If sketch is compared to a culture class as mathematics, then the color is Chinese or English, which needs to be felt. This is the so-called color perception. But the color of the exam doesn't need so much feeling, and understanding it can make you enter the Academy of Fine Arts. Drawing a good sketch is the basis of drawing a good color. For example, if you can't draw an interlining in color, then you can't draw an interlining in sketch, at least not well. The main reason why you can't draw the interlining well is that you can't grasp the volume of the interlining. It is flat when you draw it, but it looks like there are only a few dirty lines on the interlining. Then you should first draw the sketched interlining and divide it into blocks (very important, a step that must be taken). If you can draw a very in-depth sketch, deeply analyze its turning point, the relationship between the folds, and its volume, light and shadow, and show it with blocks (don't draw a circle). If you draw 2-3 pieces, and then draw colored interlining, then the block surface of the sketch is the brush strokes of the colored interlining, so that even if the color is not quite right, the volume is out, and at first glance it is a very real interlining, which is a successful step. In fact, the color is that the pen is wider than the pencil. Can you still draw? 2。 A big problem with color. Not to mention details such as interlining, do you draw colors in tones? What is tones? Tone is what kind of color is covered in your painting? To put it bluntly, the color tone of the exam painting is basically the color of your interlining, and a little (less) of this color is added to the dark part of each object. OK, there is a connection between the objects in the picture. Tone is the basis of score. Without tone, there is nothing. The scenery pays more attention to color tone, so pay attention. 3。 If you are painting a landscape, you should paint the landscape as a still life. Don't take landscape sketch very hard, just like still life sketch. The jar of the main object is the house. The interlining is the big background, mountains and waters. Trees are apples and bread, the same truth, practice and experience by yourself. 4。 What many candidates don't pay attention to is not only the contrast of lightness, hue and purity, but also the most important cold and warm. In cold light, the bright part is cold, the dark part is warm, and the warm light is the opposite. Got it? Without this, it's over. Finally, say a little big way, observe as a whole, and observe as a whole when painting! It is not myopia for others to squint at objects, but to compare the color relationship between objects, which is warmer and which is bluer. Overall observation is very important ~

Actually, I haven't painted for a long time. When I saw such a problem this time, I searched online and combined my previous feelings, hoping to help you.