splot.colorcontrast: splot color contrast ratio

In miserman/splot: Simplified Plotting for Data Exploration

splot color contrast ratio

Description

Calculates the color contrast ratio between two sets of colors, as defined by the World Wide Web Consortium.

Usage

splot.colorcontrast(color, background = "#ffffff", plot = TRUE)

Arguments

color, background	A character vector of colors, or a matrix with RGB values across rows.
plot	Logical; if FALSE, will not plot the results.

Value

A list with entries for ratio (contrast ratio), AA (ratios of at least 4.5), and AAA (ratios of at least 7). Each entry contains a matrix with colors in rows and backgrounds in columns.

Examples

# check colors against dark and light backgrounds
splot.colorcontrast(c("#FF0000", "#00FF00", "#0000FF"), c("black", "white"))

# check contrast between colors
splot.colorcontrast(c("red", "green", "blue"), c("red", "green", "blue"))

# see when shades of a color cross thresholds on a given background
splot.colorcontrast(splot.color(1:10, seed = "#a388b5"), "#101010")

miserman/splot documentation built on Oct. 30, 2023, 2:24 a.m.