• Cool undertones: Ash blonde, platinum, cool brown, burgundy, deep espresso.
  
• Warm undertones: Golden blonde, caramel, honey, auburn, warm chocolate.
  
• Neutral undertones: Most colors will suit you, but soft shades of brown, beige blonde, and rich chocolate work best.
  

If you want a bold change, try experimenting with vivid shades like blue, green, or red—but always consider how it contrasts with your undertone.