Color 8.1
Change text alignment, transform, style, weight, and color with Bootstraps text utilities and color utilities.
When working with colors be sure to test color contrast combinations.
Notes: Details at Bootstrap Docs
.text-primary
.text-secondary must be on dark backgrounds
.text-success
.text-danger
.text-shadow
.text-warning
.text-info
.text-light
.text-muted
.text-white
Source:
src/scss/base/_typography.scss, line 173