Convert Wella Professionals Illumina Color to Küül Color System

Q: How many Illumina Color shades have an exact equivalent in Color System?

Of the 43 Illumina Color shades, 37 have an exact equivalent in Color System, 6 approximate. The level (1-10) is universal; what varies is the reflect.

Find the equivalent for each Wella Professionals Illumina Color shade in Küül Color System. Complete chart with levels, reflects, and match confidence.

Remember that equivalences are approximate. Each brand has proprietary pigments and bases that produce slightly different results. We always recommend doing a strand test when switching brands.

Illumina Color	Name	Color System	Name	Match
Level 4
4/	Medium Brown	4	Brown	Exact
Level 5
5/	Light Brown	5	Light Brown	Exact
5/02	Light Brown Natural Matte	5.1	Light Ash Brown	Exact
5/81	Light Brown Pearl Ash	5.1	Light Ash Brown	Exact
5/35	Light Brown Gold Mahogany	5	Light Brown	Approximate
5/43	Light Brown Red Gold	5.5	Light Mahogany Brown	Approximate
5/7	Light Brown	5.31	Chocolate	Exact
Level 6
6/	Dark Blonde	6	Dark Blonde	Exact
6/16	Dark Ash Violet Blonde	6.1	Dark Ash Blonde	Exact
6/19	Dark Ash Cendre Blonde	6.1	Dark Ash Blonde	Exact
6/37	Dark Blonde Gold Brown	6.32	Dark Golden Pearl Blonde	Exact
6/76	Dark Brown Violet Blonde	6.1	Dark Ash Blonde	Approximate
Level 7
7/	Medium Blonde	7	Blonde	Exact
7/81	Medium Blonde Pearl Ash	7.1	Ash Blonde	Exact
7/31	Medium Gold Ash Blonde	7.3	Golden Blonde	Exact
7/35	Medium Gold Mahogany Blonde	7.3	Golden Blonde	Exact
7/42	Medium Blonde Red Matte	7.64	Red Copper Blonde	Exact
7/43	Medium Red Gold Blonde	7.64	Red Copper Blonde	Exact
7/7	Medium Brown Blonde	7.31	Latte Macchiato	Exact
7/75	Medium Blonde Brown Mahogany	7.31	Latte Macchiato	Exact
Level 8
8/	Light Blonde	8	Light Blonde	Exact
8/05	Light Natural Mahogany Blonde	8.62	Light Pearl Red Blonde	Approximate
8/1	Light Ash Blonde	8.1	Light Ash Blonde	Exact
8/13	Light Ash Gold Blonde	8.1	Light Ash Blonde	Exact
8/69	Light Violet Cendre Blonde	8.22	Light Intense Pearl Blonde	Exact
8/36	Light Gold Violet Blonde	8.3	Light Golden Blonde	Exact
8/37	Light Blonde Gold Brown	8.3	Light Golden Blonde	Exact
8/38	Light Gold Pearl Blonde	8.3	Light Golden Blonde	Exact
Level 9
9/	Very Light Blonde	9	Very Light Blonde	Exact
9/19	Very Light Ash Cendre Blonde	9.1	Very Light Ash Blonde	Exact
9/59	Very Light Mahogany Cendre Blonde	9.66	Very Light Intense Red Blonde	Approximate
9/60	Very Light Violet Natural Blonde	9.12	Very Light Pearl Ash Blonde	Exact
9/03	Very Light Natural Gold Blonde	9.33	Very Light Intense Golden Blonde	Exact
9/37	Very Light Blonde Gold Brown	9.33	Very Light Intense Golden Blonde	Exact
9/43	Very Light Red Gold Blonde	9.66	Very Light Intense Red Blonde	Exact
Level 10
10/	Lightest Blonde	10	Lightest Blonde	Exact
10/05	Lightest Natural Mahogany Blonde	10.22	Lightest Intense Pearl Blonde	Approximate
10/1	Lightest Ash Blonde	10.1	Lightest Ash Blonde	Exact
10/69	Lightest Violet Cendre Blonde	10.22	Lightest Intense Pearl Blonde	Exact
10/81	Lightest Blonde Pearl Ash	10.1	Lightest Ash Blonde	Exact
10/93	Lightest Cendre Gold Blonde	10.22	Lightest Intense Pearl Blonde	Exact
10/36	Lightest Gold Violet Blonde	10.31	Lightest Golden Ash Blonde	Exact
10/38	Lightest Gold Pearl Blonde	10.31	Lightest Golden Ash Blonde	Exact

How to read the match: Exact = same level and same reflect · Close = same level, same reflect family · Approximate = same level in natural, or adjacent level with the same reflect. Hover each badge for that row's reason.

Of the 43 Illumina Color shades, 37 exact and 6 approximate in this chart with Color System. For example, Illumina Color's 6/ maps to Color System's 6. Natural reflects cross over best; mahogany ones need more adjustment.

Illumina Color writes the reflect with a slash (7/81 = pearl blonde); Color System uses a dot (7.44 = intense copper blonde; .2 = pearl/iridescent, .7 = violet). The level (1-10) stays the same; what changes when converting is how the reflect is written.

View reverse: Küül Color System to Wella Professionals Illumina Color

We answer your questions

Questions about Illumina Color and Color System

Common questions when converting between these brands

How many Illumina Color shades have an exact equivalent in Color System?

Of the 43 Illumina Color shades, 37 have an exact equivalent in Color System, 6 approximate. The level (1-10) is universal; what varies is the reflect.

Are brand equivalences exact?

No. Equivalences are approximate because each brand uses different pigments, bases, and concentrations. The level (1-10) is universal, but the reflect result may vary. We always recommend doing a strand test when switching brands.

Is the converter also in the app?

Yes. Inside Blendsor you'll find it in Learn → Brand converter and in the chat attach button (+). There the equivalent comes with its confidence level and a warning if the product type changes, and you can send it to the advisor to fine-tune it for your client's base, grays and porosity. Download the app.

Can I mix hair color from different brands?

It's not recommended. Each brand formulates its products with specific chemistry (pH, alkalizing agent, pigment system). Mixing brands can create unpredictable reactions and unwanted results. Always use color and developer from the same brand.

Have more questions?

Email us at hello@blendsor.com

Take the next step

Charts give you the equivalent.
Blendsor gives you the full formula for that hair: ratio, developer and timing.

Analyzes dozens of variables and generates complete formulas with the brands in each salon. Free.

Convert Wella Professionals Illumina Color to Küül Color System

Other popular conversions

Questions about Illumina Color and Color System

Charts give you the equivalent.Blendsor gives you the full formula for that hair: ratio, developer and timing.

Charts give you the equivalent.
Blendsor gives you the full formula for that hair: ratio, developer and timing.