The colour-accelerate package

[Tags:bsd3, library]

This package provides data types for colours and transparency for use with Accelerate. For further information refer to the main Accelerate package:

[Skip to Readme]


Dependencies accelerate (==1.0.*), base (>=4.7 && <4.11) [details]
License BSD3
Copyright Copyright (c) [2016]. Trevor L. McDonell <>
Author Trevor L. McDonell
Maintainer Trevor L. McDonell <>
Category Data, Graphics
Home page
Bug tracker
Source repository head: git clone
this: git clone
Uploaded Fri Mar 31 03:55:48 UTC 2017 by TrevorMcDonell
Updated Fri Aug 18 12:58:27 UTC 2017 by TrevorMcDonell to revision 2
Distributions NixOS:
Downloads 115 total (18 in the last 30 days)
0 []
Status Docs uploaded by user
Build status unknown [no reports yet]
Hackage Matrix CI




Maintainer's Corner

For package maintainers and hackage trustees

Readme for colour-accelerate

Readme for colour-accelerate-


Build Status

This package provides data types and operations for dealing with colours in Accelerate. For details on Accelerate, refer to the main repository.

Example: Blur

| Test image | sRGB | RGB | |:----------:|:----:|:---:| | Test image | sRGB linear | RGB non-linear |

The test image on the left is composed of blocks and bars of the primary and secondary colours, arranged so that each colour is juxtaposed next to all others, plus black and white.

The image in the centre is created by blurring the original with a 9x9 Gaussian filter in the linear gamma sRGB space.

The image on the right is created by blurring with the same 9x9 Gaussian filter in the standard non-linear RGB colour space. Note the dark regions separating red from green and cyan, and blue from red and green; purple lines separate cyan from red and magenta; green separates yellow from cyan. These regions are artefacts produced by mixing colours in the RGB colour space.

The files to generate the test image and run the demonstration are in the examples directory.