Louis XIV can often be close to black. Blooms very well, very fragrant, pretty hardy in my zone 7 climate. Gets blackspot. My seedling, Jack Daniel. It's a seedling of Louis XIV with tiny blooms on a plant with good vigor. BS prone.. Midnight Blue is usually pretty dark. It's a great bloomer and fragrant. Pretty strong plant but not very fast growing here. Well-branched. I used to grow Black Baccarra but I didn't love it. Here is it looking fairly red:

Strangely enough, "Nearly Black" is the actual name of the rose! I will put a link below to the listing on HelpMeFind. I doubt you'd find it locally, since it is listed as only being available from Michigan Bulb and Henry Fields Seed & Nursery. I grow Black Magic, which is also blackish red, and I love it. Don't know how that would be in your climate, but it is commercially available. Here is a link that might be useful: Nearly Black

I would love to have a Black Magic, Ink Spots, or Black Jade rose bush. I am also looking for a Blue Moon rose bush. If anyone out there has any of these please contact me at dragonflygirl99@yahoo.com Thanks Beth

Thanks Pam! The blackest flower I ever saw were some pansies my neighbor grew. Now they were black, with just the slightest hint of burgandy if the light was right.