Function reference • farver

Colour space conversion This is the raison d’être of the package. Take a matrix or data frame with colour channels in the columns, and convert it from one colour space to another. Channels are automatically capped if they have defined bounds, and any `NaN`, `NA`, `Inf`, or `-Inf` values in the input will result in a row of `NA` values in the output.
`convert_colour()`	Convert between colour spaces
Colour comparison Getting a numeric value describing the distance between two colours is not a trivial task, and several metrics have been devised for that. farver supports a range of these, and allows you to compare colours in any space with each others.
`compare_colour()`	Calculate the distance between colours
Converting to and from colour strings The native format of colours in R (and other languages) is often hexadecimal encoded rgb values (`#RRGGBB`). farver provides utilities for easily going back and forth between this and any colour space.
`encode_colour()`	Encode colours into RGB hex-strings
`decode_colour()`	Decode RGB hex-strings into colour values
Colour string manipulation As colours are often encoded as strings, manipulation of individual channels requires decoding. and then encoding. farver does away with that by providing a range of functions for directly manipulating channels in colour strings.
`set_channel()` `add_to_channel()` `multiply_channel()` `raise_channel()` `cap_channel()` `get_channel()`	Modify colour space channels in hex-encoded colour strings
Converting to and from native colour representation Under the hood, R encodes colours as integers, with the 32 bit in the integer divided beetween red, green, blue, and alpha, giving them 8 bit (or 256 values) each. farver provides a simple and fast way of converting between the native integer representation and the string representation.
`encode_native()` `decode_native()`	Convert to and from the R native colour representation