You could also add in some brightness with a white dress shirt and light grey blazer, keeping the overall outfit tailored yet not too toned down. (theidleman.com)
Why don't you try wearing a burgundy turtleneck with a dark grey blazer over the top. (theidleman.com)
What I really like about this look is the simple grey blazer and then the silk top sticking out at the front and back. (midnightcouture.de)