Purple and white: What Color Do They Make?

Lilac

Purple + white = lilac. With more purple you get orchid; with more white, lavender.

More shades from the same colors

Orchid2 parts purple + 1 part whiteLavender1 part purple + 2 parts whiteLight lilaclilac + whiteDark lilaclilac + black

Put the white down first and add the color little by little: that way you control how light it gets.
For a pastel shade, use lots of white and very little color.

What color do purple and white make?

Purple + white, in equal parts, make lilac. With more purple it leans toward orchid, and with more white, toward lavender.

What ratio of purple and white should I use?

Half and half makes lilac. 2 parts purple to 1 part white gives orchid; 1 part purple to 2 parts white gives lavender.

How do I make lilac lighter or darker?

Add white little by little to lighten it (light lilac) or a little black to darken it (dark lilac).

Is it the same with watercolor, acrylic and oil?

The result is similar. Watercolor looks lighter because the white paper shows through; acrylic gets a little darker as it dries.