I use browser bookmarks to switch between different cross-account IAM assumed roles in the AWS console.
Here's the URL format (remove space between slashes):
— Eric Hammond (@esh) February 6, 2018
另外有 tweet 的 reply 有提到還可以加上顏色：
You can even add something like &color=F2B0A9
There is also a way to redirect to a page after switching, but I can't remember the parameter name
— Ben Bridts (@ikB3N) February 6, 2018