Why My Roots Are Different Colour Than Rest Which Colour Should I Dye My Hair?

Which colour should I dye my hair? - why my roots are different colour than rest

Now my hair is brown in color. I want a little easier. I thought of a blonde color, which in turn used to buy blonde but lighter. However, my roots are full, and I'm concerned, they are in a different color than the rest of the hair. What do you suggest? Please help!