Gray has three undertones. It's either blue, green or violet. And this is why your gray wall might look blue, green or purple, because you missed the undertone before you painted the walls.

What undertones does grey have?

The 3 Undertones of Gray Paint Colours

Gray has three undertones – blue, purple and green. You might like to think you can avoid theM, but you can't – like taxes, death, and empty wine bottles, they will haunt you.

What color is grey made of?

Grey is produced either by using black and white, or by combining equal amounts of cyan, magenta, and yellow. Most greys have a cool or warm cast to them, as the human eye can detect even a minute amount of color saturation. Yellow, orange, and red create a "warm grey". Green, blue, and violet create a "cool grey".