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Color management
Last updated 11/30/2015
Color Blindness (Photoshop and Illustrator) Creates a soft proof that reflects colors visible to a person with color
blindness. The two soft proof options, Protanopia and Deuteranopia, approximate color perception for the most
common forms of color blindness. For more information, see
Soft-proof for color blindness (Photoshop and
Illustrator).
Custom soft-proof options
Device To Simulate Specifies the color profile of the device for which you want to create the proof. The usefulness of
the chosen profile depends on how accurately it describes the devices behavior. Often, custom profiles for specific
paper and printer combinations create the most accurate soft proof.
Preserve CMYK Numbers or Preserve RGB Numbers Simulates how the colors will appear without being converted
to the color space of the output device. This option is most useful when you are following a safe CMYK workflow.
Rendering Intent (Photoshop and Illustrator) When the Preserve Numbers option is deselected, specifies a rendering
intent for converting colors to the device you are trying to simulate.
Use Black Point Compensation (Photoshop) Ensures that the shadow detail in the image is preserved by simulating
the full dynamic range of the output device. Select this option if you plan to use black point compensation when
printing (which is recommended in most situations).
Simulate Paper Color Simulates the dingy white of real paper, according to the proof profile. Not all profiles support
this option.
Simulate Black Ink Simulates the dark gray you really get instead of a solid black on many printers, according to the
proof profile. Not all profiles support this option.
In Photoshop, if you want the custom proof setup to be the default proof setup for documents, close all document
windows before choosing the View > Proof Setup > Custom command.
Soft-proof for color blindness (Photoshop and Illustrator)
Color Universal Design (CUD) ensures that graphical information is conveyed accurately to people with various types
of color vision, including people with color blindness. Several countries have guidelines that require CUD-compliant
graphics in public spaces.
The most common types of color blindness are protanopia (reduced sensitivity to red) and deuteranopia (reduced
sensitivity to green). A third of color blind people are affected strongly; the remainder have milder forms of color
blindness.
A Original image B Color-blind proof C Optimized design
To determine whether a document is CUD-compliant, do the following:
1 Convert the document to RGB color mode, which provides the most accurate soft-proofs for color blindness.
2 (Optional) To simultaneously view the original document and a soft-proof, choose Window > New Window
(Illustrator) or Window > Arrange > New Window (Photoshop).
3 Choose View > Proof Setup > Color Blindness, and then choose either Protanopia-type or Deuteranopia-type. (To
comply with CUD, check your document in both views.)
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