Hair Color by Numbers Hair color ranges from black (level 1) to lightest blonde (level 10). The further you move away from your natural color, the more dramatic your results. That means your roots will be noticeable sooner. For more time between colorings, stay 2 levels lighter or darker than your natural color.
Tone Tone is measured in warm, cool and neutral. If you want to add warmth to your hair, go with golden, chestnut or bronze tones. Or, keep it cool with icy, ashy or smoky shades. Shades with “neutral” in their name allow your natural color to show through the result and provide the best gray coverage.