Red: If blue is mixed with red, it will raise people's overall temperament to a higher level, that is, under the pure overall situation, it will make people cleaner and more fashionable.
White: White is a versatile color, and different colors have different feelings. So blue with white is also a good choice. White is pure, blue is pure, and the temperament of the two colors is more of a contrast.
Black: Black is also a versatile color, but it depends on the temperament. For black, people will feel calm. So with pure blue, there is a kind of precipitation purity.
Green: Blue is also suitable for light green. Remember, it is light green, not dark green, otherwise the effect will be poor. Green gives people a feeling of peace, just matching the blue temperament.
Light yellow: light yellow is also suitable for blue, although the effect is not as good as the above, but if you match other colors of jewelry on it, the effect will be different.
The above colors can be freely matched. For example, the sweater is white and the scarf can be light yellow or green, so the sweater and scarf are not the same color.
I hope I can help you!