get_luminance: Get color's luminance

In houyunhuang/tinycolor: Parse and Manipulate Colors with tinycolor.js

Description

Get the luminance of a color vector.

Usage

get_luminance(x, na.rm = FALSE)

Arguments

x	a any type color string or a javascript color object specifying.
na.rm	a logical value indicating whether NA values should be stripped before the computation proceeds.

Value

Returns the perceived luminance of a color, from 0-1 as defined by Web Content Accessibility Guidelines (Version 2.0).

Examples

get_luminance("{ r: 80, g: 45, b: 20 }")
get_luminance("blue")
get_luminance("HSL(0.2, 0.9, 0.1)")

houyunhuang/tinycolor documentation built on June 6, 2019, 7:43 p.m.