Skip to content

Latest commit

 

History

History
141 lines (91 loc) · 5.81 KB

colors.md

File metadata and controls

141 lines (91 loc) · 5.81 KB
layout title description group toc
docs
Colors
Convey meaning through `color` with a handful of color utility classes. Includes support for styling links with hover states, too.
utilities
true

{{< callout info >}} {{< partial "callouts/warning-color-assistive-technologies.md" >}} {{< /callout >}}

Colors

Colorize text with color utilities. If you want to colorize links, you can use the [.link-* helper classes]({{< docsref "/helpers/colored-links" >}}) which have :hover and :focus states.

{{< callout info >}} Color utilities like .text-* that generated from our original $theme-colors Sass map don't yet respond to color modes, however, any .text-*-emphasis utility will. This will be resolved in v6. {{< /callout >}}

{{< example >}} {{< colors.inline >}} {{- range (index $.Site.Data "theme-colors") }}

.text-{{ .name }}

.text-{{ .name }}-emphasis

{{- end -}} {{< /colors.inline >}}

.text-body

.text-body-emphasis

.text-body-secondary

.text-body-tertiary

.text-black

.text-white

.text-black-50

.text-white-50

{{< /example >}}

{{< callout warning >}} Deprecation: With the addition of .text-opacity-* utilities and CSS variables for text utilities, .text-black-50 and .text-white-50 are deprecated as of v5.1.0. They'll be removed in v6.0.0. {{< /callout >}}

{{< callout warning >}} Deprecation: With the addition of the expanded theme colors and variables, the .text-muted utility has been deprecated as of v5.3.0. Its default value has also been reassigned to the new --bs-secondary-color CSS variable to better support color modes. It will be removed in v6.0.0. {{< /callout >}}

Opacity

{{< added-in "5.1.0" >}}

As of v5.1.0, text color utilities are generated with Sass using CSS variables. This allows for real-time color changes without compilation and dynamic alpha transparency changes.

How it works

Consider our default .text-primary utility.

.text-primary {
  --bs-text-opacity: 1;
  color: rgba(var(--bs-primary-rgb), var(--bs-text-opacity)) !important;
}

We use an RGB version of our --bs-primary (with the value of 13, 110, 253) CSS variable and attached a second CSS variable, --bs-text-opacity, for the alpha transparency (with a default value 1 thanks to a local CSS variable). That means anytime you use .text-primary now, your computed color value is rgba(13, 110, 253, 1). The local CSS variable inside each .text-* class avoids inheritance issues so nested instances of the utilities don't automatically have a modified alpha transparency.

Example

To change that opacity, override --bs-text-opacity via custom styles or inline styles.

{{< example >}}

This is default primary text
This is 50% opacity primary text
{{< /example >}}

Or, choose from any of the .text-opacity utilities:

{{< example >}}

This is default primary text
This is 75% opacity primary text
This is 50% opacity primary text
This is 25% opacity primary text
{{< /example >}}

Specificity

Sometimes contextual classes cannot be applied due to the specificity of another selector. In some cases, a sufficient workaround is to wrap your element's content in a <div> or more semantic element with the desired class.

CSS

In addition to the following Sass functionality, consider reading about our included [CSS custom properties]({{< docsref "/customize/css-variables" >}}) (aka CSS variables) for colors and more.

Sass variables

Most color utilities are generated by our theme colors, reassigned from our generic color palette variables.

{{< scss-docs name="color-variables" file="scss/_variables.scss" >}}

{{< scss-docs name="theme-color-variables" file="scss/_variables.scss" >}}

Grayscale colors are also available, but only a subset are used to generate any utilities.

{{< scss-docs name="gray-color-variables" file="scss/_variables.scss" >}}

{{< scss-docs name="theme-text-map" file="scss/_maps.scss" >}}

Variables for setting colors in .text-*-emphasis utilities in light and dark mode:

{{< scss-docs name="theme-text-variables" file="scss/_variables.scss" >}}

{{< scss-docs name="theme-text-dark-variables" file="scss/_variables-dark.scss" >}}

Sass maps

Theme colors are then put into a Sass map so we can loop over them to generate our utilities, component modifiers, and more.

{{< scss-docs name="theme-colors-map" file="scss/_variables.scss" >}}

Grayscale colors are also available as a Sass map. This map is not used to generate any utilities.

{{< scss-docs name="gray-colors-map" file="scss/_variables.scss" >}}

RGB colors are generated from a separate Sass map:

{{< scss-docs name="theme-colors-rgb" file="scss/_maps.scss" >}}

Color opacities build on that with their own map that's consumed by the utilities API:

{{< scss-docs name="utilities-text-colors" file="scss/_maps.scss" >}}

Color mode adaptive text colors are also available as a Sass map:

{{< scss-docs name="theme-text-map" file="scss/_maps.scss" >}}

{{< scss-docs name="theme-text-dark-map" file="scss/_maps.scss" >}}

Utilities API

Color utilities are declared in our utilities API in scss/_utilities.scss. [Learn how to use the utilities API.]({{< docsref "/utilities/api#using-the-api" >}})

{{< scss-docs name="utils-color" file="scss/_utilities.scss" >}}