apply_alpha: Add alpha to hex color
In xaringanthemer: Custom 'xaringan' CSS Themes

apply_alpha

R Documentation

Add alpha to hex color

Description

Applies alpha (or opacity) to a color in hexadecimal form by converting opacity in the ⁠[0, 1]⁠ range to hex in the ⁠[0, 255]⁠ range and appending to the hex color.

Usage

apply_alpha(color_hex, opacity = 0.5)

Arguments

`color_hex`	A character string representing a hex color
`opacity`	Desired opacity of the output color

Value

A character string with added opacity level as hexadecimal characters.

Examples

blue <- "#0e6ba8"
blue_transparent <- apply_alpha(blue)

if (requireNamespace("scales", quietly = TRUE)) {
  scales::show_col(c(blue, blue_transparent))
}

xaringanthemer documentation built on Sept. 15, 2024, 5:06 p.m.