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dreamRs/colorscale
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R6 api forchroma.js & an RStudio add-in to create a color scale from a single color.
Install development version from GitHub with:
remotes::install_github("dreamRs/colorscale")
An add-in to create a color palette from a single color (largely inspired byhttps://github.com/hihayk/scale).
To launch the gadget use the "Addins" menu in RStudio or:
colorscale::addin_color_scale()
Create a R6 class to access chroma.js methods:
library(colorscale)ch<-chroma$new("hotpink")ch$darken(2)ch$eval()#> [1] "#930058"hsl<-chroma$new()hsl$chroma.hsl(330,1,0.6)view_cols(hsl$eval())hsl$darken(seq(0.2,3,0.2))view_cols(hsl$eval())
Some methods have wrapper for easier use:
# Mixes two colorschroma_mix(color1="red",color2="blue")#> [1] "#800080"# Average between colorschroma_avg(colors= c("#ddd","yellow","red","teal"))#> [1] "#b79757"# Random colorschroma_random()#> [1] "#650a0c"chroma_random(10)#> [1] "#63e24b" "#909363" "#5a3d7d" "#41a505" "#8f5f13" "#df6535" "#da43d3" "#04fc8f" "#6ee31c" "#ac5c94"# Euclidean distance between two colorschroma_distance("#fff","#ff0")#> [1] 96.94758chroma_distance("#fff","#ff0","rgb")#> [1] 255
Convert color to specific color space:
ch<-chroma$new("orange")ch$hex()#> [1] "#ffa500"ch$rgb()#> [1] 255 165 0ch$hsl()#> [1] 38.82353 1.00000 0.50000ch$lab()#> [1] 74.93565 23.93317 78.94978ch$gl()#> [1] 1.0000000 0.6470588 0.0000000 1.0000000ch$css()#> [1] "rgb(255,165,0)"