Colour selections fail accessibility guidelines

[papadeltasierra]

Prerequisites

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• Refer to Differences between Windows PowerShell 5.1 and PowerShell.

Steps to reproduce

PowerShell 7.3.7. Use some commands and trigger "hint" text. For example see the image below:

As someone who is slightly colourblind, I can barely see the help text and it certainly does not pass accessibility guidelines according to Accessibility Insights for Windows.

I have tried changing the colour scheme but they all seem to suffer from similar issues and I could not find one that made all the test have a good contrast.

Expected behavior

Text should all be easily readable, albeit perhaps with a need to select a "high contrast" colour scheme.

Actual behavior

Various different text colours, of which the help text is one example, are hard if not impossible to read.

Error details

None.

Environment data

PS > $PSVersionTable

Name                           Value
----                           -----
PSVersion                      7.3.7
PSEdition                      Core
GitCommitId                    7.3.7
OS                             Microsoft Windows 10.0.22621
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

PS >

Visuals

[237dmitry]

I have tried changing the colour scheme

I think you can change PSReadline options:

Get-PSReadlineOption

Set-PSReadlineOption -Color @{

  ListPrediction = "Green"       
  ListPredictionSelected = "Red"
  ListPredictionTooltip = "`e[38;5;95m"
}

Any colors. The example colors is just example.

[papadeltasierra]

@237dmitry Thank you so much! Excellent tip! Doesn't let MS off the hook for not having a default accessibility compatible scheme of course but does help work around it ;-).

[daxian-dbw]

@papadeltasierra Can you please upgrade to v2.3.4 of PSReadLine? We updated the default inline prediction color to provide more contrast, and I'd love to know how that works for you.

To upgrade, simply run this command:
Install-Module -Name PSReadLine -Repository PSGallery -Scope CurrentUser -RequiredVersion 2.3.4 -Force

[papadeltasierra]

Sorry, didn't spot the prompt for feedback in amongst all the other GitHub SPAM I received from Microsoft. I did the upgrade but the colours appear to be identical, in fact it backed out my change to the prediction colour setting and set if back to the unreadable pale colour. Microsoft has some open-source tools that check for accessibility (in this case mainly contrast that I tried against some of the colours and let's just say the tool was not impressed.

[papadeltasierra]

Also don't see the "Reopen Issue" button on this page - is it disabled?

[daxian-dbw]

@papadeltasierra thanks for replying back. Can you please share your changes to the prediction color setting, so that we know what color settings work for you?