The app visualizes colors either along the hue-chroma plane for a given luminance value or along the luminance-chroma plane for a given hue. Colors can be entered by specifying the hue (H), chroma (C), and luminance (L) values via sliders, by entering an RGB hex code, or by clicking on a color in the hue-chroma or luminance-chroma plane. It is also possible to select individual colors and add them to a palette for comparison and future reference.
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logical: used for debugging the shiny interface.
choose_color is a convenience alias for
go along with
choose_palette. Another alias is
hclcolorpicker invisibly returns a vector of colors choosen.
If no colors have been selected
NULL will be returned.
Claus O. Wilke, Reto Stauffer, Achim Zeileis
Zeileis A, Fisher JC, Hornik K, Ihaka R, McWhite CD, Murrell P, Stauffer R, Wilke CO (2020). “colorspace: A Toolbox for Manipulating and Assessing Colors and Palettes.” Journal of Statistical Software, 96(1), 1–49. doi: 10.18637/jss.v096.i01
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## Not run: hcl_color_picker() ## End(Not run)
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