Reading Wella Color Numbering System Like a Pro

The Wella color numbering system is not a riddle. Once you know what each digit represents, you can look at any Koleston Perfect, Color Touch, or Illumina shade and know exactly what is in the tube without reading a single word of the shade name. Here is how to read the numbers like a pro.

The Three-Part Code

Every Wella shade follows a simple structure:

• First number: Level (how light or dark the hair is, from 1 to 12)
• Second number (after the slash): Primary tone or reflect
• Third number (if present): Secondary tone, weaker than the primary

For example, a shade labeled 7/43 reads as level 7, red-primary, gold-secondary. A shade labeled 8/0 reads as level 8, pure natural, no reflects. That structure is consistent across every Wella color line.

Level: The First Number

The level is the depth of the color on a scale from 1 to 12. The higher the number, the lighter the shade.

• 1: Black
• 2: Darkest 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
• 11 and 12: Ultra-high-lift blondes (Special Blonde series only)

Primary Tone: The Second Number

The number after the slash is the primary reflect. This tells you the dominant tone sitting on top of the natural base.

• /0: Pure natural, no reflect
• /1: Ash (blue-based cool)
• /2: Matte (green-based cool)
• /3: Gold
• /4: Red
• /5: Mahogany (red-violet)
• /6: Violet
• /7: Brunette (warm brown)
• /8: Pearl (cool beige)
• /9: Cendre (ash-violet)

Secondary Tone: The Third Number

The third digit is the secondary reflect, which is always weaker than the primary. For example, 6/34 is level 6, gold-primary, red-secondary, giving a warm copper finish. 7/86 is level 7, pearl-primary, violet-secondary, giving a cool, softly pink-toned blonde. The secondary is there to fine-tune the reflect without overpowering it.

Doubled Numbers Mean Intensity

When the same number appears twice in the tonal position, it means the tone is intensified. A shade labeled 6/44 is level 6 with a doubled red, which reads as a more saturated, vivid red than a single /4. The Vibrant Reds series in Koleston Perfect uses doubled numbers for exactly this reason. When you see a doubled digit, expect a bolder finish.

How to Use the Numbering in Formulation

Reading the numbers lets you predict what a formula will do without pulling out a swatch book. A few examples:

• 6/0 mixed with 6/3: Level 6 natural with a soft gold reflect. A warm neutral.
• 7/1 mixed with 7/8: Level 7 cool ash with a pearl boost. A modern cool blonde.
• 5/75 mixed with 5/5: Level 5 mahogany-leaning brunette. A deep red-brown.
• 9/16 on pre-lightened hair: Level 9 ash-violet toner that kills yellow.

Common Mistakes When Reading Shades

• Treating the second and third numbers as equal intensity (the primary is always stronger)
• Forgetting that the Special Blonde series numbers differently (12/ shades start at high lift)
• Assuming the numbering is the same across all brands (it is not, but it is close to Goldwell and Schwarzkopf)
• Ignoring the doubled-digit intensification in the red and ash series
• Mixing two shades with opposing reflects without adjusting expectations

Why This Matters

Reading the numbers fast lets you formulate in your head during a consultation. A client shows up with brassy mid-lengths on a level 7 base. You know 7/89 will knock that warmth down with a pearl-cendre neutralization. Another client wants warm honey. 8/34 delivers gold-primary with red-secondary for that warmth. No guessing, no scrolling through a swatch book in front of the chair.

Shop Wella at Hair Color USA

Hair Color USA carries the full Wella Koleston Perfect, Color Touch, Color Charm, and Illumina lines. Every shade, every level, every reflect. We ship from Jackson, Michigan, and keep the numbers you use most often stocked. Shop all Wella products and build a color wall you can read at a glance.

The numbering system is one of the most useful tools in a colorist's brain. Learn it once and your formulations get faster, more accurate, and more confident. That is the difference between looking up a shade and knowing it.