For a striking contrast and bold statement:
* Electric Blue or Teal: These cool tones pop beautifully against warm brown hair and can bring out the coolness in brown eyes.
* Bright Purple (think violet or deep amethyst): Another excellent contrast that complements brown hair without clashing. The intensity can be adjusted to be subtle or bold.
* Hot Pink or Magenta: These bold shades offer a fun and playful vibe, and can add warmth to the overall look.
For a slightly more subtle, yet still noticeable, effect:
* Emerald Green: A rich, earthy tone that harmonizes with brown hair while still being unique. It can also enhance any green undertones in brown eyes.
* Deep Burgundy or Crimson: These dark, rich reds can be considered unnatural enough while still blending well with brown hair.
* Silver or Gray: Offers a modern and edgy vibe. If the brunette has cool-toned skin, silver can be especially flattering.
Things to consider:
* Skin tone: Is the brunette's skin tone warm, cool, or neutral? Cool-toned skin usually looks best with cooler colors (blues, purples, silvers), while warm-toned skin shines with warmer colors (reds, oranges, greens). Neutral skin can pull off most colors.
* Personal style: Does the brunette prefer a bold, edgy look or a more subtle, understated style? This will influence the intensity and placement of the streak.
* Maintenance: Brighter colors fade faster and require more upkeep. Darker, more muted colors will last longer.
* Placement: Where the streak is placed can affect its impact. A streak framing the face will be more noticeable than one hidden underneath.
* Professional Consultation: It's always a good idea to consult with a professional hairstylist. They can assess hair condition, recommend the best color and technique, and ensure a beautiful and healthy result. They can also perform a strand test to see how the color will take to the hair.
Ultimately, the best color streak is the one that the brunette loves and feels confident wearing!