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ACB File - What is an .acb file and how do I open it?
Learn about .ACB files and view a list of programs that open them.
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Overview
What is an ACB file? An ACB file is a custom colors file used by Photoshop, an image-editing program. It contains color records, which include color names, color codes, RGB and CMYK components, lightness, and chrominance. ACB files also contain header information for the book version, title, description, color count, and other file information.
More Information Color books are used for creating images that conform to certain color standards. For example, some color catalogs are better for screen displays while others are better for scanning or print. In Photoshop CS5, you can choose a color book when selecting the Color Libraries button from the Color Picker window. Several ACB files are provided with the Photoshop installation within the \Presets\Color Books\ directory. Photoshop provides color books for color catalogs such as ANPA, DIC, FOCOLTONE, HKS, PANTONE, TOYO, and TRUMATCH. NOTE: Adobe InDesign and Illustrator also use color books stored in ACB files.
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DeveloperAOL
Popularity2.2 | 6 Votes
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In-Depth
.ACB File Extension
4 file types use the .acb file extension.
Adobe Photoshop Color Book File
| Developer | Adobe Systems |
| Popularity |
3.6 | 18 Votes |
What is an ACB file?
An ACB file is a custom colors file used by Photoshop, an image-editing program. It contains color records, which include color names, color codes, RGB and CMYK components, lightness, and chrominance. ACB files also contain header information for the book version, title, description, color count, and other file information.
More Information
Color books are used for creating images that conform to certain color standards. For example, some color catalogs are better for screen displays while others are better for scanning or print. In Photoshop CS5, you can choose a color book when selecting the Color Libraries button from the Color Picker window. Several ACB files are provided with the Photoshop installation within the \Presets\Color Books\ directory.
Photoshop provides color books for color catalogs such as ANPA, DIC, FOCOLTONE, HKS, PANTONE, TOYO, and TRUMATCH.
NOTE: Adobe InDesign and Illustrator also use color books stored in ACB files.
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Programs that open ACB files
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Adobe Photoshop 2025
Free Trial
Adobe InDesign 2023
Free Trial
Adobe Illustrator 2025
Free Trial
ACB2XML
Free
Mac
Adobe Photoshop 2025
Free Trial
Adobe InDesign 2023
Free Trial
Adobe Illustrator 2025
Free Trial
Category: Settings Files
Updated: December 4, 2018
ADX Audio Package File
| Developer | CRI Middleware |
| Popularity |
4.0 | 8 Votes |
An ACB file may also be an audio package used by by various Sega Dreamcast, PlayStation 2, GameCube, and Wii video games developed by CRI Middleware. It contains ADX or ADX2 formatted audio that is used for sound effects, music, and dialogue featured in a game.
More Information
The audio stored in the ACB file is saved in the lossy ADX or ADX2 storage and compression formats. The formats were developed by CRI Middleware, a Japanese company that specializes in audio and video software in the entertainment industry.
NOTE: You can use VGMToolbox to unpack the ACB file.
Programs that open ACB files
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VGMToolbox
Free
Category: Audio Files
Updated: November 5, 2018
AutoCAD Color Book File
| Developer | Autodesk |
| Popularity |
2.4 | 5 Votes |
Colors file used by AutoCAD, a CAD productivity application; contains a collection of colors that can be used to paint or fill lines and surfaces; sometimes used for distributing company color sets to standardize drawing colors.
More Information
Downloaded ACB files should be placed in the \Support\Color\ directory of the AutoCAD installation. The colors are available the next time AutoCAD is launched.
Programs that open or reference ACB files
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Autodesk AutoCAD 2025
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Autodesk AutoCAD 2025
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Category: Settings Files
Updated: March 25, 2011
AOL Cabinet File
| Developer | AOL |
| Popularity |
2.2 | 6 Votes |
An ACB file may also be a compressed archive used by America Online (AOL) desktop software. It contains data the AOL installer uses to install the software. ACB files are similar to .CAB (Windows Cabinet) files.
More Information
CAB files contain compressed data that Windows uses to install programs and updates. ACB files are similar to CAB files, but are used by both the Windows and Mac versions of America Online's desktop software installer. When a user installs America Online, the program retrieves data from ACB files and uses that data to complete the program installation.
How to open an ACB file
ACB files are not meant to be manually opened. The America Online desktop software installer loads data from ACB files as needed while installing AOL.
Programs that open or reference ACB files
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AOL Desktop for Windows
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AOL Desktop for Mac
Category: Misc Files
Updated: September 13, 2023