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colourspace colourspace hex logo

Technically speaking, we’re dealing with color systems, not spaces. But I couldn’t pass up such a great name. 🚀

CRAN R-CMD-check ORCID

Main Functionality

Convert colours between spaces (hex, RGB, HSL, OKLab, OKLch) and generate modern ready-to-paste CSS syntax.

Installation

install.packages("colourspace")

Who is this for?

Anyone doing awesome Shiny apps or Quarto dashboards that wants to spice things up with better colors, or any UI/UX/Web professional that wants to convert from one colour space to another, or produce a modern CSS syntax programmatically for any color out there. 🎨

Quick examples

library(colourspace)

# Convert hex to RGB
hex_to_rgb("#ff5733")
#>   r   g   b 
#> 255  87  51

# Get modern CSS output (oklch is the default)
to_css("#ff5733")
#> [1] "oklch(68.0325% 0.21 33.6745)"

# With transparency
to_css(c("coral", "teal"), alpha = 0.8)
#> [1] "oklch(73.5085% 0.1680 40.2249 / 0.8)" "oklch(54.3125% 0.0927 194.8078 / 0.8)"

# Reverse lookup: hex to colour name
hex_to_name("#c93f38")
#> [1] "100 Mph"

# Fallback to nearest named colour (default behaviour)
hex_to_name("#a1b2c3")
#> Warning: Fallback to nearest named colour for 1 colour(s).
#> [1] "Blue Pot"

# Disable fallback to get NA for unknown colours
hex_to_name("#a1b2c3", fallback = "none")
#> [1] NA

# Low level function (great usecase for applying different spaces!)
convert_colourspace(value = "ffffff", from = "hex", to = "name")
#> [1] "white"

Colour spaces

Space Description
hex #rrggbb or #rrggbbaa
rgb Red, Green, Blue (0–255)
hsl Hue (0–360), Saturation, Lightness (0–100)
oklab Perceptually uniform Lab (L: 0–1, a/b: ±0.4)
oklch Polar OKLab (L: 0–1, Chroma ≥0, Hue: 0–360)
name Colour name from 31k+ database

License

MIT License. See LICENSE.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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