contrast: Calculates the minimum contrast between col and the colors...
In dpcarballo/coloR: Various Tools for Working with Color

Description Usage Arguments Value Examples

Calculates the minimum contrast between col and the colors specified in ...

1	contrast(col, ...)

`col`	The color we want to compare. Hexcode, c(r,g,b), color name as character and "color" class object are all supported.
`...`	All other colors that col will be compared to. Hexcode, c(r,g,b), color name as character and "color" class object are all supported.

A number between 0 and 1, representing a measure for contrast.

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contrast("red", "blue")
contrast("red", "blue", "black", "green", "white")
contrast("blue", list("#000000", "brown", c(255, 0, 255), "pink", c(0, 128, 176)))