Ah yeah ..that should be no bothers.... probably a `1b`will be a really good match.... sounds to me that you should be fine.... the `Back2natural` color/conditioner will help with any initial color-blending in your case.... I actually have a bottle which is almost full [ it`s for color 1b] and I`m not going to be using, as my new fullcap is a color `1`[Black]..so will pop it in the post to you if you like....you`ll have it to hand then, should you need it.. I won`t be using it again..would rather see it used than get thrown out..... you can mail me at [email protected] I hate wasting anything [food, products etc.] so would be happy to see someone making use of it..cheers. Paul.