Colours for effects split into several curves

A six-colour categorical palette, used when an effect splits by a factor – a factor-smooth interaction, most often. Assigned in the order given.

Usage

fancyfx_palette(n = 6)

Arguments

n

How many colours to return. Defaults to all six.

Value

A character vector of hex colours.

Details

Chosen by search rather than by eye, and checked against the properties that decide whether a reader can actually tell two curves apart: every colour sits in a mid lightness band, carries enough chroma not to read as grey, clears a 3:1 contrast ratio against a white page, and stays separable under simulated protanopia and deuteranopia.

All pairs clear the colour-vision-deficiency floor. The fifth and sixth colours are the closest pair and sit between the floor and the comfortable target, which is why a legend is always drawn – identity is never carried by colour alone.

Six is the limit. Past that, colours stop being tellable apart no matter how they are chosen, and a facet per level communicates far better than a seventh hue; plotEffects() says so rather than inventing one.

See also

theme_fancyfx() for the matching theme.

Examples

fancyfx_palette()
#> [1] "#215689" "#B58D2D" "#346210" "#C368FD" "#B4677A" "#1892A3"
fancyfx_palette(3)
#> [1] "#215689" "#B58D2D" "#346210"