Open Source Color Management

OpenColorIO 1.1.1 documentation

Compatible Software

The following sofware all supports OpenColorIO (to varying degrees).

If you are interested in getting OCIO support for an application not listed here, please contact the ocio-dev mailing list.

If you are a developer and would like assistance integration OCIO into your application, please contant ocio-dev as well.

After Effects

Compositor - Adobe

An OpenColorIO plugin is available for use in After Effects.

See src/aftereffects if you are interested in building your own OCIO plugins.

Pre-built binaries are also available for download, courtesy of fnordware.


Open Source 3D Application

In version 2.64, Blender has integrated OCIO as part it’s redesigned color management system.


2D Paint - Open Source

Krita now support OpenColorIO for image viewing, allowing for the accurate painting of float32/OpenEXR imagery.

See for details.


Roto, Paint, Keying - SilhouetteFX

OCIO is natively integrated in 4.5+ Full support is provide for both image import/export, as well as image display.


Compositor - The Foundry

Nuke 6.3v7+ ships with native support for OpenColorIO. The OCIO configuration is selectable in the user preferences.

OCIO Nodes: OCIOCDLTransform, OCIOColorSpace, OCIODisplay, OCIOFileTransform, OCIOLookConvert, OCIOLogConvert

The OCIODisplay node is suitable for use in the Viewer as an input process (IP), and a register function is provides to add viewer options for each display upon launch.

The OCIO config “nuke-default” is provided, which matches the built-in Nuke color processing. This profile is useful for those who want to mirror the native nuke color processing in other applications. (The underlying equations are also provided as python code in the config as well).

A video demonstration of the Nuke OCIO workflow.


3D Paint - The Foundry

Mari 1.4v1+ ships with native support for OpenColorIO in their display toolbar.

A video demonstration of the Mari OCIO workflow.


CG Pipeline / Lighting Tool - The Foundry

Color management in Katana (all versions) natively relies on OCIO.

2D Nodes: OCIODisplay, OCIOColorSpace, OCIOCDLTransform Monitor Panel: Full OCIO Support


Conform & Review - The Foundry

Hiero 1.0 will ship with native support for OCIO in the display and the equivalent of Nuke’s OCIOColorSpace in the Read nodes.

It comes with “nuke-default” OCIO config by default, so the Hiero viewer matches when sending files to Nuke for rendering.


OpenColorIO display luts can be exported as ICC profiles for use in photoshop. The core idea is to create an .icc profile, with a valid description, and then to save it to the proper OS icc directory. (On OSX, ~/Library/ColorSync/Profiles/). Upon a Photoshop relaunch, Edit->Assign Profile, and then select your new OCIO lut.

See the the OCIO user guide for details on baking ICC profiles for Photoshop


Open Source Image Library / Renderer Texture Engine

Available in the current code trunk. Integration is with makecolortx (allowing for color space conversion during mipmap generation), and also through the public header src/include/color.h .

Remaining integration tasks include color conversion at runtime .


The core OpenColorIO API is avaiable for use in C++. See the export directory for the C++ API headers. Minimal code examples are also available in the source code distribution. Of particular note are src/apps/ocioconvert/ and src/apps/ociodisplay/

Also see the Developer Guide


The OpenColorIO API is available for use in python. See the “pyglue” directory in the codebase.

See the devleoper guide for usage examples and API documentation on the PYthon bindings

Vegas Pro

Video editing - Sony

Vegas Pro 12 uses OpenColorIO, supporting workflows such as S-log footage via the ACES colorspace.

Apps w/icc or luts

flame (.3dl), lustre (.3dl), cinespace (.csp), houdini (.lut), iridas_itx (.itx) photoshop (.icc)

Export capabilities through ociobakelut:

$ ociobakelut -- create a new LUT or icc profile from an OCIO config or lut file(s)
$ usage:  ociobakelut [options] <OUTPUTFILE.LUT>
$ example:  ociobakelut --inputspace lg10 --outputspace srgb8 --format flame lg_to_srgb.3dl
$ example:  ociobakelut --lut filmlut.3dl --lut calibration.3dl --format flame display.3dl
$ example:  ociobakelut --lut look.3dl --offset 0.01 -0.02 0.03 --lut display.3dl --format flame display_with_look.3dl
$ example:  ociobakelut --inputspace lg10 --outputspace srgb8 --format icc ~/Library/ColorSync/Profiles/test.icc
$ example:  ociobakelut --lut filmlut.3dl --lut calibration.3dl --format icc ~/Library/ColorSync/Profiles/test.icc
$ Using Existing OCIO Configurations
$     --inputspace %s      Input OCIO ColorSpace (or Role)
$     --outputspace %s     Output OCIO ColorSpace (or Role)
$     --shaperspace %s     the OCIO ColorSpace or Role, for the shaper
$     --iconfig %s         Input .ocio configuration file (default: $OCIO)
$ Config-Free LUT Baking
$     (all options can be specified multiple times, each is applied in order)
$     --lut %s             Specify a LUT (forward direction)
$     --invlut %s          Specify a LUT (inverse direction)
$     --slope %f %f %f     slope
$     --offset %f %f %f    offset (float)
$     --offset10 %f %f %f  offset (10-bit)
$     --power %f %f %f     power
$     --sat %f             saturation (ASC-CDL luma coefficients)
$ Baking Options
$     --format %s          the lut format to bake: flame (.3dl), lustre (.3dl),
$                          cinespace (.csp), houdini (.lut), iridas_itx (.itx), icc (.icc)
$     --shapersize %d      size of the shaper (default: format specific)
$     --cubesize %d        size of the cube (default: format specific)
$     --stdout             Write to stdout (rather than file)
$     --v                  Verbose
$     --help               Print help message
$ ICC Options
$     --whitepoint %d      whitepoint for the profile (default: 6505)
$     --displayicc %s      an icc profile which matches the OCIO profiles target display
$     --description %s     a meaningful description, this will show up in UI like photoshop
$     --copyright %s       a copyright field

See this ocio-dev thread for additional usage discussions.

When exporting an ICC Profile, you will be asked to specify your monitor’s profile (it will be selected for you by default). This is because ICC Profile are not LUTs per se. An ICC Profile describes a color space and then needs a destination profile to calculate the transformation. So if you have an operation working and looking good on the monitor you’re using (and maybe its profile has been properly measured using a spectrophotometer), then choose your display. If the transform was approved on a different monitor, then maybe you should choose its profile instead.


Playback Tool - Tweak Software

RV has native OCIO support in version 4 onwards. For more details, see the OpenColorIO section of the RV User Manual.

Java (Beta)

The OpenColorIO API is available for use in Java. See the jniglue directory in the codebase.

This integration is currently considered a work in progress, and should not be relied upon for critical production work.


Open Source VFX Platform

Gaffer is a node based application for use in CG and VFX production, with a particular focus on lighting and look development.


‘Open Source Compositing Softare <>’

CryEngine3 (Beta)

Game Engine - Crytek (Cinema Sandbox)

CryENGINE is a real-time game engine, targeting applications in the motion-picture market. While we don’t know many details about the CryEngine OpenColorIO integration, we’re looking forward to learning more as information becomes available.