What is blue heart?

The term "Blue Heart" can refer to a few different things, depending on the context:

1. Blue Heart Emoji (💙): The blue heart emoji is often used to express affection, love, or support. It can signify trust, harmony, peace, and loyalty. It's commonly used in various online communications, including text messages and social media posts.

2. Blue Heart Campaign: This is an international anti-human trafficking initiative by the United Nations Office on Drugs and Crime (UNODC). The Blue Heart Campaign seeks to raise awareness about the plight of victims of human trafficking and to inspire action to combat this crime. The blue heart symbolizes the sadness of those who are trafficked while reminding us of the cold-heartedness of those who buy and sell fellow human beings.

3. Blue Heart Shape: In a more literal sense, a blue heart shape could be used in art, design, or branding. Color psychology suggests that blue conveys depth, stability, trust, and calmness.

4. Blue Heart Foundation: There are also various nonprofit organizations with names that include "Blue Heart," which may focus on a range of causes, from environmental protection to health and education. You would need to refer to the specific organization for more details.

5. Music and Literature: There might be songs, albums, or literary works titled "Blue Heart." Specific details would depend on the artist or author.

If you have a specific context in mind, please let me know, and I would be happy to provide more targeted information.