Okay moms, I'm looking to find an organic hair dye for an all over color for my self. My roots are…

Okay moms, I'm looking to find an organic hair dye for an all over color for my self. My roots are coming in and I have a 4 inch regrowth and I just want to touch it up. I haven't done my hair since early November and I want to get this faded purple/red color covered by a darker brown. Do any of you mom's know of a hair color that's not as strong?