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.ACO File Extension

File TypeAdobe Photoshop Color Swatch File

DeveloperAdobe Systems
4.4 (7 Votes)
CategorySettings Files


This file is saved in a binary format, which requires a specific program to read its contents.

What is an ACO file?

Color file used by Adobe Photoshop, a raster graphics editing program; stores a color swatch, which is a collection of predefined colors; also stores the name of each color, which is displayed when hovering the mouse over the color in the color palette; used for creating images that conform to certain color standards.

More Information

ACO files are useful for controlling colors for different publishing media, such as digital image files and paper prints. Several color swatch files are included with the Adobe Photoshop installation in the /Presets/Color Swatches/ directory, which include colors for the ANPA, FOCOLTONE, HKS, PANTONE, TOYO, and TRUMATCH standards.

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Programs that open ACO files
Adobe Photoshop CC 2017
Adobe Photoshop CC 2017
ACO File Viewer
Updated 4/28/2015

About the file extension aco

Our goal is to help you understand what a file with a *.aco suffix is and how to open it.

The Adobe Photoshop Color Swatch file type, file format description, and Mac and Windows programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and do not publish any information we have not been able to verify.

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