Bootstrap 5 Theme Color Customization: Customizing Brand Colors and Component Colors

This article introduces methods for customizing Bootstrap 5 theme colors to create interfaces that align with brand styles. The core is controlling theme colors through Sass variables, which enhances brand consistency and reduces duplicate code. The steps are as follows: First, install Bootstrap 5 and Sass (Node.js environment required), and create the SCSS folder structure. Next, define global variables in custom.scss, such as setting the primary color to #4285F4 (Google Blue), and override core variables. Then, you can fine-tune component colors, such as using the $btn-primary-bg variable for buttons, the $card-bg variable for cards, or temporary utility classes. Advanced techniques include enabling dark mode ($enable-dark-mode: true) and implementing dynamic switching via CSS variables. Note that variables must be defined before importing Bootstrap, and compile using a Sass tool to generate CSS. After mastering this, you can flexibly customize brand interfaces.