When it comes to creating your style guide, you want to be mindful of what you're trying to get across to others about yourself.

A style guide can help you layout the colors, fonts and design elements that truly align with your personality. Some questions you might want to think about while creating your style guide are:
What are my core values?

What do I stand for?
What do I want my voice to be?
What’s my differentiator?

From here, you can start to piece together whether you want your brand to include light or dark colors, serif fonts or sans serif fonts.

The color wheel resource from adobe can help you find the palette that portrays your brand.