Grayscale background color utility classes Bootstrap Snippets Library / Utilities Examples Bootstrap 4 does not have built in classes for levels of gray that you can use in your layouts. Add these CSS styles to your project to change that. Advertise HereBootstrap 4 See the Pen Grayscale background color utility classes by Jacob Lett (@JacobLett) on CodePen. Code Snippet Preview Quick Links View Demo Want to Learn the Artistic Side of Web Design?Live Online Training - Coming Soon Learn More & Register