Why is my avatar the wrong colour?

So I've created an avatar and signature, both have the same colour background in the program in which they were created. However, when the avatar picture is uploaded the forum changes the colour of it so now the avatar and signature do not match.

Why is this and can I stop it?

Are they both supposed to be grey and black? If so, they match on my view. It could be due to the file type or platform.

Your avatar only looks slightly darker here on my laptop Edan

They appear the same to me on my phone. I'd double check the save setting you're using. Format can make a difference but so can quality, if you're given that option.

It's the same for me. It must be your browser.

JLSpinner wrote: It's the same for me. It must be your browser.

I opened another browser and they are indeed much closer in colour, though not perfectly.

They were both jpegs so I'm a little confused as to the colour difference. The one in my sig is the colour that they were intended to be.