xaringanthemer includes a number of functions that provide themed xaringan styles. All of the styling functions start with the `style_` prefix.

The goal of each style function is to quickly set up a coordinated color palette for your slides based on one or two starter colors. Styles based on one color start with `style_mono_` and styles based on two colors start with `style_duo_`. How the starter colors are used is described in the final portion of the style function name. For example, `style_mono_accent()` uses a single color as an accent color.

Note that the colors used below are for demonstration only, the point of the `style_` functions is for you to choose your own color palette!

If you color palette uses more than two colors, you can add additional colors with the `colors` argument. See the Colors section for more information.

### Monotone

Use these functions to automatically create a consistent color palette for your slides, based around a single color.

#### `style_mono_light()`

A light theme based around a single color.

    style_mono_light(base_color = "#23395b")

#### `style_mono_dark()`

A dark theme based around a single color.

    style_mono_dark(base_color = "#cbf7ed")

#### `style_mono_accent()`

The default xaringan theme with a single color used for color accents on select elements (headers, bold text, etc.).

    style_mono_accent(base_color = "#43418A")

#### `style_mono_accent_inverse()`

An “inverted” default xaringan theme with a single color used for color accents on select elements (headers, bold text, etc.).

    style_mono_accent_inverse(base_color = "#3C989E")

### Duotone

These themes build from two (ideally) complementary colors.

#### `style_duo()`

A two-colored theme based on a primary and secondary color.

    style_duo(primary_color = "#1F4257", secondary_color = "#F97B64")

#### `style_duo_accent()`

The default Xaringan theme with two accent colors.

    style_duo_accent(primary_color = "#035AA6", secondary_color = "#03A696")

#### `style_duo_accent_inverse()`

An “inverted” default Xaringan theme with two accent colors.

    style_duo_accent_inverse(primary_color = "#035AA6", secondary_color = "#03A696")

### Solarized

There are also two themes based around the solarized color palette, `style_solarized_light()` and `style_solarized_dark()`. For both themes, it is advisted to change the syntax highlighting theme to `solarized-light` or `solarized-dark` (looks great paired or constrasted).

#### `style_solarized_light()`

    style_solarized_light()

#### `style_solarized_dark()`

    style_solarized_dark()

To do this, your YAML header should look more-or-less like this:

    output:
      xaringan::moon_reader:
        css: ["xaringan-themer.css"]
        nature:
          highlightStyle: solarized-dark
          highlightLines: true
          countIncrementalSlides: false

## Colors

When designing your xaringan theme, you may have additional colors in your desired color palette beyond those used in the accent colors of the mono and duotone styles.

The `style*()` functions in xaringanthemer include a `colors` argument that lets you quickly define additional colors to use in your slides. This argument takes a vector of named colors

    colors = c(
      red = "#f34213",
      purple = "#3e2f5b",
      orange = "#ff8811",
      green = "#136f63",
      white = "#FFFFFF",
    )

and creates CSS classes from the color name that set the text color — e.g. `.red` — or that set the background color — e.g. `.bg-red`. If you use custom CSS in your slides, the color name is also stored in a CSS variable — e.g. `var(--red)`.

So slide text like this

    This **.red[simple]** .white.bg-purple[demo]
    _.orange[shows]_ the colors .green[in action].

will be rendered in HTML as

> This simple demo shows the colors in action.

Note that the color names in `colors` need to be valid CSS names, so `"purple-light"` will work, but `"purple light"` will not.