Two. Blue and yellow.
It depends if you're talking about green objects or green light:
There are 3 primary colors; Red, Yellow and green. Mixing combinations of these colors will give you all the colors.
There are 3 primary colors (red, blue and yellow) and 3 secondary colors (purple, orange and green).
There are 3 secondary colors, which are green, orange, and purple. Of course, these come in a great many variations. The primary colors are red, blue, and yellow. Secondary colors are made by a combination of two primary colors. Blue + yellow = green, red + yellow = orange, and red + blue = purple.
3 red, yellow, and green
There are 7 colors in a rainbow.There are myriad shades, but there are SEVEN defined colors : Red, Orange, Yellow, Green , Blue, Indigo, and Violet.
blue, green, orange, basically pastel colors
They can be 3 colors blue, green and pink
If you start with 2 colors you can make many hues of one color from them. For example, blue and yellow can only make different hues of green. But you can differentiate yellow-green anf blue-green from them.
Four Colors - RED WHITE GREEN BLACK
There are four colors: Red, Green, White, and Black.
green yellow and purple
The Brazilian flag has four colors: green, yellow, blue, and white.
White light is a mixture of many colors. If you see green when you look through a green glass, plastic, or whatever, it means that it lets the green light pass, other colors not.
most are usually green blue red yellow and white there have been cases were they were just 2 colors or even 3 but green cheeked parakeets all ways have at least 2 colors
There are 3 primary colors; Red, Yellow and green. Mixing combinations of these colors will give you all the colors.
There are 3 primary colors (red, blue and yellow) and 3 secondary colors (purple, orange and green).
There are 3 secondary colors, which are green, orange, and purple. Of course, these come in a great many variations. The primary colors are red, blue, and yellow. Secondary colors are made by a combination of two primary colors. Blue + yellow = green, red + yellow = orange, and red + blue = purple.