Open ACO files

  • Full name
    Adobe Photoshop Color Palette And Swatches Format
  • Developer
    Adobe Systems
  • Popularity
Have you encountered a problem with a ACO file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a ACO file here. In the further part of this page we have added a list of programs that should open your ACO file. It is enough you choose a proper application for your operating system, download and install it.

What is ACO file?

The file extension acb is used by the image editing software Adobe Photoshop for so-called Color Swatches files. In these color palettes are stored. These consist of a collection of color codes, names and color space specifications such as RGB, LAB or CMYK.

More info

ACO Color palette files are used, for example, in image editing to save color palettes for reuse or to match a particular color standard. Depending on the intended use of the image (screen, print, etc.), certain color catalogs are better suited than others.

You can access the color palettes in Photoshop by clicking on the small arrow in the Swatches window. Photoshop already offers a number of different libraries included, including ANPA, FOCOLTONE, PANTONE and TRUMATCH.

With such ACO color files, colors of an image can also be saved as a color palette. In addition, there are thematically sorted ACO files on the Internet for download. To be able to use your own ACO file, you have to save it under 'Preferences / Swatches' in the Photoshop program folder.

Programs which can open a ACO file

How to open file with ACO extension?

In order to open a file with ACO extension one of the following programs must be installed on user’s system. If a problem with opening ACO file occurred, it is highly possible that none of the listed programs is present on user’s system. Even if one or more said programs are installed, there may be issues related with given programs. In order to solve a problem with ACO files, follow the instructions below.
1
Install Adobe Photoshop or other program from the list

Most often resolving problems with opening ACO files is very simple. Just install an appropriate program that supports such files. All of the listed programs support ACO files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of ACO files or offer file conversion options, but may not be capable of editing such files.

Set Adobe Photoshop as the default program for opening ACO files

It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate ACO files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Adobe Photoshop applications is not on the list, select "Browse" option in order to manually locate the directory where Adobe Photoshop has been installed.

2
3
Check the section that lists most common problems with ACO files

Sometimes problems with opening ACO files may not lie with the application itself, but can arise due to other causes, such as:

  • File data is corrupted
  • ACO files has been not been completely download from the internet (only a part of the data has been downloaded)
  • Currently used user account hasn’t been granted necessary privileges to open ACO files (should that be the case, please contact your system administrator or IT specialist)
  • ACO file was being copied from a corrupted storage device and is incomplete or data is corrupted. (Copying files from unknown or untrusted sources should be conducted with great care as such files may contain malicious software, which can damage your system)

Similar extensions