First, the technical term of hair color is called chromaticity. The darker the color, the smaller the chromaticity, and the lighter the color, the greater the chromaticity. For example, black is 3 degrees deep, dark brown is 3-4 degrees, brown is 4-5 degrees, and milk ash and linen are 8-9 degrees.

Second, in high-chroma hair, low-chroma colors can be directly successful. For example, the original 4-5 degrees or 8-9 degrees is brown milk ash, which needs to be dyed black at 3 degrees, so it can be dyed directly.

In low chroma hair, high chroma color can only be achieved in the range of 2-3 chroma at most. For example, three shades of black will be dyed into nine shades of milk gray, with six shades in the middle. In this case, bleaching is needed, and 2-3 shades can be bleached successfully at a time. This is what we call fading cream and bleaching powder.

Third, red plus yellow turns orange, red plus blue turns purple, and yellow plus blue turns green. Red, yellow and blue are three primary colors; Orange, purple and green are three colors. Intermittent colors and intermediate colors will turn into various grays. But all grays should have a color tendency, such as blue gray, purple gray, yellow gray and so on.

4. Hair dyeing is the final effect color formed by adding different lightness and different background colors to our hair. For example, using purple dye paste to dye a 5-degree purple on the hair is actually purple+red, that is, purplish red, which requires the intervention of blue and background red to form purple.

V. Basic color matching

1, red plus yellow becomes orange.

2. Most of Huang Shaohong becomes dark orange.

3. Less red and more yellow turn into light yellow.

4. Red and blue become purple.

5. Less blue, more red, more purple, more red and more roses.

6. Yellow plus blue becomes green.

7. Yellow becomes less, blue becomes more and becomes dark blue.

8. There is less blue, more yellow and less green.

9. Red plus yellow plus less blue becomes brown.

10, red plus yellow plus blue becomes grayish black (various shades can be adjusted according to the severity).

1 1, red with blue becomes purple, and white becomes lavender.

12, yellow plus less red becomes dark yellow plus white becomes khaki.

13, yellow with less red becomes dark yellow.

14, yellow plus blue becomes green, and white becomes milky green.

15, red plus yellow plus less blue plus white becomes light brown.

16, red plus yellow plus blue turns gray, black plus white turns light gray.

17, yellow plus blue turns green and blue turns blue-green.

18, red plus blue turns purple and white turns pink and purple (rose).

19, without red and white, it becomes pink ... Red, yellow and blue are the three primary colors, and orange, purple and green are the three primary colors.

20. Intermittent colors and alternate colors will turn into various grays.