What Do the Numbers Mean on Hair Color?

Ever stood in the hair dye aisle, overwhelmed by a sea of boxes with cryptic numbers like “7.3” or “10N”? You’re not alone! Understanding what those numbers mean on hair color can be confusing. But fear not, color connoisseur, because we’re about to demystify the code and turn you into a hair color numbering system pro!

Breaking Down the Hair Color Numbering System

Most hair color brands use a universal numbering system. This system helps you determine the shade’s level and undertone, allowing you to predict the final color result with more accuracy.

Level: The First Number (Darkness/Lightness)

The first number on the hair color box usually ranges from 1 to 10. This number indicates the level of darkness or lightness on a scale from black to lightest blonde. Think of it as the base color.

Here’s a general guide:

  • Level 1: Black
  • Level 2: Very Dark Brown
  • Level 3: Dark Brown
  • Level 4: Medium Brown
  • Level 5: Light Brown
  • Level 6: Dark Blonde
  • Level 7: Medium Blonde
  • Level 8: Light Blonde
  • Level 9: Very Light Blonde
  • Level 10: Lightest Blonde

[image-1|hair-color-levels|Hair Color Levels Chart| A chart depicting various hair color levels from 1 (black) to 10 (lightest blonde), with visual examples of hair swatches at each level.]

Undertone: The Letter/Number After the Dot (Reflects)

The letter or number you see after the dot (or sometimes a slash) indicates the hair color’s undertone. Understanding undertones is crucial, as they influence the overall warmth or coolness of the final color.

Here are the common undertones:

  • A – Ash: Neutralizes warmth, resulting in cooler tones.
  • B – Beige: Creates a neutral to slightly cool shade.
  • C – Copper: Adds warm, reddish-orange tones.
  • G – Gold: Infuses warm, golden highlights.
  • N – Natural: Provides a neutral base color.
  • R – Red: Delivers vibrant red pigments.
  • V – Violet: Counteracts yellow tones, resulting in cooler shades.
  • W – Warm: Creates warm, sun-kissed hues.

For example, a hair color labeled 7.3 (or 7G) means it’s a medium blonde with golden undertones.

Deciphering Additional Numbers and Letters

Some hair color brands might include additional numbers or letters to indicate:

  • Intensity of Reflects: Numbers like “0” (natural) or “.1” (subtle) to “.3” (intense) might be used to denote the strength of the undertone.
  • Color Families: Certain brands use letters like “NN” for natural, “BV” for blue-violet, or “RR” for intense red to signify specific color families.

Why Knowing the Numbers Matters

Understanding the numbers on hair color boxes empowers you to:

  • Choose the Right Shade: Match the level to your natural hair color for the most natural-looking results.
  • Control Warmth/Coolness: Select the right undertone to complement your skin tone and achieve the desired warmth or coolness.
  • Predict the Outcome: Get a better idea of how the color might look based on your hair’s current state and the chosen dye.
  • Communicate Effectively: Clearly convey your desired shade to your stylist for a smoother salon experience.

Hair Color Numbers: FAQs

Can I use any hair color level?
It’s generally recommended to stay within 2-3 levels of your natural hair color for optimal results. Going lighter often requires bleaching, while going much darker might result in an unnatural appearance.

How do I know my hair’s undertone?
Observe your hair in natural light. Does it have warm, golden, reddish, or cool, ashy tones? This can help you determine your natural undertone.

What if the color turns out different than expected?
Factors like hair porosity, previous color treatments, and even water quality can influence the final color. If in doubt, always do a strand test before applying the color to your entire head.

Still Unsure? We’re Here to Help!

Choosing the right hair color can be tricky. If you’re feeling lost in the world of levels and undertones, don’t hesitate to reach out! Contact us at 0373298888, email us at [email protected], or visit our Color Box Hanoi location at 86 Cầu Giấy, Hà Nội. Our team of color experts is available 24/7 to guide you towards your perfect shade.