What are the 8 primary colors?

there arent 8. the primary colors are red, yellow, and blue used to mix paints and other art materials. the 8 rainbow colors are red, orange, yellow, green, blue, indigo, violet (purple), and pink.

Nope, paint mixing and printing use yellow, cyan, magenta.

Word on the street is the 8 primary colours are black, red, green, blue, magenta, cyan, yellow, and white.

The street is one over the odds.

Printing: yellow, cyan, magenta, plus black to make solid blacks.

Televison: red, green, blue.

White, by definition (containing all colours) is *not* a primary.

Nor is black a true primary, it's just that no useful cmbination of CYM will produce true, deep carbon-black tones, so printers use the CYMK model.