You are dealing with not a black but a close analog. Which means it might not come out as perfect as you want or expect it to.
This is true. Because of the textured finish, there is a problem with it being matched perfectly. AAMOF, the texture, if there is a texture may not even allow the computer to even match the color. In that case, IF you can find an old timer who has worked in a paint store for a long period of time, he can probably match the textured look better than the computer. However, those skills have all but vanished because we now rely on the computer and have done so for the last 20 or so years. Then there are few paint stores even in business due to the big box stores. And I have yet to encounter anyone in any of the box sores that have the skill of color matching on their own.