I am new to oil paintings and I have found that black is very difficult to work with. I’d like to do some dark/goth paintings but I’m having trouble making the black blend to grey. The transition doesn’t look smooth.
The fundamentals of painting and color theory: black is rarely used (of course it can be in certain instances). But when observing with the human eye, shadows or dark colors in general are typically dark blues, greens and purples. Taking black and adding white to it to make gray might actually be quite difficult to get exactly what you want, and might come out as muddled.
If you look at artwork such as by Monet, or even Rembrandt, the colors used in their darker paintings aren't actually black. You might find they are dark greens, or dark yellows.
The artist in this Youtube video explains in detail, making a richer, tuned off-black from complementary colors, that can be lightened with white.
If you are making dark gothic paintings and want to use a lot of black in your compositions consider making black the ground (base color) and then, after it has dried, work with colors and lighter greys over that base.
You would be painting the light into a pitch black world, very goth, while keeping your other colors clean.