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What is the color of contrast?
Remove unwanted colors. Make the target color more colorful.

Yellow+Red = Orange The strongest warm color is secondary color, and orange is the contrast color of blue.

Red+blue = the secondary color of purple cool color system, and purple is the contrast color of yellow.

Blue+yellow = green, which is the strongest secondary color in the cool color system. Green is the antonym of red.

It involves the mixing of primary colors and secondary colors, and tertiary colors can be obtained:

Yellow+orange = yellow/orange. Warm colors are tertiary colors, and yellow/orange is opposite to blue/purple.

Red+orange = red/orange warm color is a three-level color red/orange versus blue/green.

Red+purple = red/purple warm color is the third color red/purple versus yellow/green.

Blue+Green = Blue/Green The third color of the cool color system: blue/green versus red/orange.

Blue+purple = the third color of the blue/purple cool color system: blue/purple versus yellow/orange.

Yellow+Green = the third color of the yellow/green cool color system. Yellow/green is red/purple.

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Precautions:

According to the principles of chromatics and the requirements of hair dyeing, fuzzy colors can be divided into monochrome blur and discoloration blur. Monochrome hedges are also called main color hedges. For example, purple neutralizes yellow, blue neutralizes orange, and green neutralizes red, that is, the colors in hair dyeing are used. They are pigments, colorless, etc. Just like a watercolor pen, it can only be conditioned with water or added to dye paste, and the weight of dioxygen milk can never be calculated.

If the background color of the guest's hair is yellow and the target color is six degrees red, then the contrast color should be considered. We should use purple to contrast yellow and make our hair brown. If more purple turns dark brown, the color will darken and the target color will not be reached. The other is the color-changing hedge method, which mainly means that a main color plus a secondary color will produce a secondary color, which can remove the noise on the hair.

When the hair is in a certain chromaticity, the color will be different. For example, when the hair reaches an octave, the background color of the hair is orange. It's not enough to use purple only, because orange and yellow are compound colors, and blue and purple must be used to develop colors. If monochrome offset is used, only one color can be neutralized, and the other colors will also affect the target color.

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