Pha sơn đỏ, xanh dương và vàng.

Given the above summary, write a detailed text in English for it.
Black is the darkest color, but there are still degrees of blackness you can make with paint. The exact shades of red, blue, and yellow that you use will determine the black. Use your choice of oil, watercolor or acrylic paint.  Using Aureolin, Rose Madder Genuine, and Cobalt Blue will yield a soft black while using Winsor Yellow, Permanent Alizarin Crimson, and Winsor Blue will yield a bold black. If you have a basic paint set, whatever red, blue and yellow you have will work. Magenta and cyan are common red and blue to use.