Question

any color mixed with black...

1. shade
2. complementary
3. primary
4. tint

Explanation:

A shade is defined as any color that has been mixed with black to darken it, which matches the provided definition and the visual example (the darker red circle is the original red mixed with black). A tint is color mixed with white, primary colors are the base colors that can't be mixed from others, and complementary colors are pairs that contrast each other.

Answer:

1. Shade