How do hair color numbers reflect lightness or darkness?
December 21, 2025 · caitlin
Hair color numbers are a standardized system used by hair color manufacturers to indicate the lightness or darkness of a hair dye. Understanding these numbers can help you choose the right shade for your desired look. Typically, hair color numbers range from 1 to 10, with 1 being the darkest (black) and 10 being the lightest (light blonde).
What Do Hair Color Numbers Mean?
Hair color numbers are part of a universal numbering system that helps identify the depth and tone of a hair color. The numbers usually appear on hair dye boxes and are crucial for achieving consistent results.
- Primary Number: Indicates the level of lightness or darkness.
- Secondary Number: Represents the tone, such as ash, gold, or red.
For example, a hair color labeled as 6.3 would be a dark blonde with a gold tone.
How to Read Hair Color Numbers?
Understanding the Primary Number
The primary number in a hair color code refers to the level of lightness or darkness. Here’s a breakdown:
| Level | Description |
|---|---|
| 1 | Black |
| 2 | Very Dark Brown |
| 3 | Dark Brown |
| 4 | Medium Brown |
| 5 | Light Brown |
| 6 | Dark Blonde |
| 7 | Medium Blonde |
| 8 | Light Blonde |
| 9 | Very Light Blonde |
| 10 | Lightest Blonde |
Decoding the Secondary Number
The secondary number indicates the tone or reflect of the hair color. Here are common tones:
- .0: Natural
- .1: Ash
- .2: Matte/Green
- .3: Gold
- .4: Copper
- .5: Mahogany
- .6: Red
- .7: Metallic
- .8: Pearl/Blue
- .9: Violet
For instance, a 7.1 would be a medium blonde with an ash tone.
Why Are Hair Color Numbers Important?
Understanding hair color numbers is essential for achieving your desired hair color and avoiding unwanted tones. It ensures you select a shade that complements your skin tone and existing hair color. Additionally, it helps in correcting color mistakes, such as neutralizing unwanted brassiness with an ash tone.
How to Choose the Right Hair Color?
Consider Your Skin Tone
- Cool Skin Tones: Opt for shades with ash or pearl undertones.
- Warm Skin Tones: Choose colors with gold or copper tones.
Match with Your Natural Hair Color
Selecting a color within two levels of your natural shade often provides the most natural-looking results.
Use a Strand Test
Before full application, perform a strand test to ensure the color meets your expectations.
How to Maintain Your Hair Color?
Use Color-Safe Products
- Shampoo and Conditioner: Choose products specifically designed for color-treated hair.
- Heat Protectant: Use before styling to prevent color fading.
Regular Touch-Ups
Schedule regular touch-ups to maintain vibrancy and cover any regrowth.
Avoid Overwashing
Wash your hair less frequently to help preserve the color.
People Also Ask
What is the difference between level and tone in hair color?
The level refers to the lightness or darkness of the hair color, while the tone indicates the hue or reflect, such as ash, gold, or red. Understanding both helps in selecting a hair color that complements your style and skin tone.
How can I neutralize unwanted hair color tones?
To neutralize unwanted tones, choose a color with the opposite tone on the color wheel. For example, use an ash tone to counteract brassiness or yellow hues in blonde hair.
Can I mix different hair color numbers?
Yes, mixing different hair color numbers can create a custom shade. However, it’s important to stay within the same brand and line to ensure compatibility and achieve the best results.
How often should I dye my hair to maintain color?
For permanent hair color, touch-ups every 4-6 weeks are recommended to maintain vibrancy and cover regrowth. Semi-permanent colors may require more frequent application, every 2-4 weeks.
What should I do if my hair color turns out too dark?
If your hair color is too dark, consider using a clarifying shampoo to help fade the color more quickly. Alternatively, consult a professional stylist for advice on lightening the shade safely.
Understanding hair color numbers can significantly enhance your ability to choose and maintain your desired hair color. By considering your natural hair color, skin tone, and the level and tone of the dye, you can achieve a look that enhances your features and personal style. For further tips on hair care, explore our articles on maintaining healthy hair and choosing the best hair products for your needs.
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