Wearing a dark brown suit and a tie with silver gray, milky white, blue white and red stripes or blue-black stripes will be more solemn and generous.
Wearing a suit and no tie is not formal enough, so you can't attend formal occasions, so you can only go out to play and get together with friends. Speaking of wearing a tie, there is a lot of pressure here. Because wearing a western-style shirt is the most formal way to wear it, if you don't wear a tie, it will give people a very casual and sloppy feeling.
If you really don't want to wear a tie or you really don't have time, you can have three choices:
A put on a white shirt with a wider collar, turn the general out, and the fashionable appearance will come out, but the suit worn outside must be dark;
B. You can wear a dark shirt, with stripes or plaids as the first choice, which will not make people feel monotonous, but also have a slimming effect;
C. turtleneck pullovers are the safest accessories for suits. It has many colors and is easy to match!
This is just a personal opinion!
If you are satisfied, I thank you very much!