outline-color

Utilities for controlling the color of an element's outline.

Quick reference

Class	Styles
outline-inherit	outline-color: inherit;
outline-current	outline-color: currentColor;
outline-transparent	outline-color: transparent;
outline-<color>	outline-color: var(--color-<color>);
outline-(<custom-property>)	outline-color: var(<custom-property>);
outline-[<value>]	outline-color: <value>;

Source: https://tailwindcss.com/guide/outline-color

Examples

Basic example

Use utilities like outline-blue-500 and outline-cyan-500 to control the outline color of an element:

<button class="outline-2 outline-offset-2 outline-blue-500">Button A</button>
<button class="outline-2 outline-offset-2 outline-cyan-500">Button B</button>
<button class="outline-2 outline-offset-2 outline-pink-500">Button C</button>

Changing the opacity

Use the color opacity modifier to control the opacity of an element's outline color:

<button class="outline-2 outline-blue-500/75">
  Semi
</button>

Using a custom value

Use the outline-[<value>] syntax to set the outline color based on a completely custom value:

<button class="outline-[#243c5a] outline-2">
  Custom
</button>

For CSS variables, you can also use the outline-(<custom-property>) syntax:

<button class="outline-(--my-outline-color) outline-2">
  <!-- ... -->
</button>

This is just a shorthand for outline-[var(<custom-property>)] that adds the var() function for you automatically.

Responsive design

Prefix an outline-color utility with a breakpoint variant like md: to only apply the utility at medium screen sizes and above:

<button class="outline md:outline-blue-400">
  <!-- ... -->
</button>

Learn more about using variants in the variants documentation.