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50 lines
1.5 KiB
R
50 lines
1.5 KiB
R
% Generated by roxygen2: do not edit by hand
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% Please edit documentation in R/contrast_text.R
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\name{contrast_text}
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\alias{contrast_text}
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\title{Contrast Text Color}
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\usage{
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contrast_text(
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background,
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light_text = "white",
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dark_text = "black",
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threshold = 0.5,
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method = "perceived_2"
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)
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}
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\arguments{
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\item{background}{A hex/named color value that represents the background.}
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\item{light_text}{A hex/named color value that represents the light text
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color.}
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\item{dark_text}{A hex/named color value that represents the dark text color.}
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\item{threshold}{A numeric value between 0 and 1 that is used to determine
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the luminance threshold of the background color for text color.}
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\item{method}{A character string that specifies the method for calculating
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the luminance. Three different methods are available:
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c("relative","perceived","perceived_2")}
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}
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\value{
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A character string that contains the best contrast text color.
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}
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\description{
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Calculates the best contrast text color for a given
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background color.
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}
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\details{
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This function aids in deciding the font color to print on a given background.
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The function is based on the example provided by teppo:
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https://stackoverflow.com/a/66669838/21019325.
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The different methods provided are based on the methods outlined in the
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StackOverflow thread:
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https://stackoverflow.com/questions/596216/formula-to-determine-perceived-brightness-of-rgb-color
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}
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\examples{
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contrast_text(c("#F2F2F2", "blue"))
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contrast_text(c("#F2F2F2", "blue"), method="relative")
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}
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