Compute the relative luminance of an sRGB colour — relative_luminance • doestyle

Compute the relative luminance of sRGB colour(s). See WCAG 2.1 definition: relative luminance.

Usage

relative_luminance(hex_values)

Arguments

hex_values: A character vector of hex value(s).

Value

relative_luminance() returns a numeric vector of luminance values.

Examples

relative_luminance(c("#ffffff", "#000000", "#002664", "#d7153a"))
#> [1] 1.00000000 0.00000000 0.02306327 0.15288892
relative_luminance(doe_cols("white", "black", "blue-01", "red-02"))
#> [1] 1.00000000 0.00000000 0.02306327 0.15288892