There are several quizzes available online that can help you determine the best hair color for you. Here are some of the most popular ones:

1. Madison Reed Hair Color Quiz : This quiz asks you about the look you are hoping to achieve, your current hair color, and any hair concerns you may have. Based on your answers, it recommends your perfect shade.

2. Total Beauty Hair Color Quiz : This quiz helps you determine the hair color that complements your skin tone. It asks you questions about how your skin reacts to the sun and provides you with a personalized list of shades that will suit you.

3. Coloured Hair Care Quiz : This quiz asks you about your skin tone, eye color, and natural hair color to determine the best hair color for you.

4. Garnier Color Match Quiz : This quiz asks you about your hair tone, shade, or any gray hairs to cover, and the look you are going for. It provides you with a personalized list of shades that will suit your needs.

5. Vixen Daily Hair Color Quiz : This quiz helps you determine whether your skin tone is warm or cool, which will make it easier for you to know the best hair color to match your skin tone.

6. You Probably Need a Haircut Quiz : This quiz asks you five questions to determine the best hair color for you. It also provides you with tips on how to maintain your new hair color.

Overall, these quizzes can be a helpful starting point in determining the best hair color for you. However, keep in mind that the final decision should be based on your personal preferences and style.