Opposite colours attract. Some may think that complementary colours in an outfit is a bit too much. A bit too much is never enough! However you don’t want to be looking like a walking rainbow. When doing colour blocking, try to have two main parts of your outfit as complementary colours and keep the rest neutral. With my OOTD , my complementary colours was yellow and blue (not the traditional complementary colours of yellow and purple but yellow and blue will still work), then the neutral colours was black and white. This still gives you the vibrant look but doesn’t make you look clown crazy.
Here are some pictures: