Change:
export const listFocusForeground = registerColor('list.focusForeground', { dark: null, light: null, hcDark: null, hcLight: null }, nls.localize('listFocusForeground', "List/Tree foreground color for the focused item when the list/tree is active. An active list/tree has keyboard focus, an inactive does not.")); export const listFocusOutline = registerColor('list.focusOutline', { dark: focusBorder, light: focusBorder, hcDark: activeContrastBorder, hcLight: activeContrastBorder }, nls.localize('listFocusOutline', "List/Tree outline color for the focused item when the list/tree is active. An active list/tree has keyboard focus, an inactive does not.")); export const listFocusAndSelectionOutline = registerColor('list.focusAndSelectionOutline', { dark: null, light: null, hcDark: null, hcLight: null }, nls.localize('listFocusAndSelectionOutline', "List/Tree outline color for the focused item when the list/tree is active and selected. An active list/tree has keyboard focus, an inactive does not.")); <del> export const listActiveSelectionBackground = registerColor('list.activeSelectionBackground', { dark: '#04395E', light: '#0060C0', hcDark: null, hcLight: Color.fromHex('#0F4A85').transparent(0.1) }, nls.localize('listActiveSelectionBackground', "List/Tree background color for the selected item when the list/tree is active. An active list/tree has keyboard focus, an inactive does not.")); </del> <ins> export const listActiveSelectionBackground = registerColor('list.activeSelectionBackground', { dark: '#2F6DBB', light: '#0060C0', hcDark: null, hcLight: Color.fromHex('#0F4A85').transparent(0.1) }, nls.localize('listActiveSelectionBackground', "List/Tree background color for the selected item when the list/tree is active. An active list/tree has keyboard focus, an inactive does not.")); </ins> export const listActiveSelectionForeground = registerColor('list.activeSelectionForeground', { dark: Color.white, light: Color.white, hcDark: null, hcLight: null }, nls.localize('listActiveSelectionForeground', "List/Tree foreground color for the selected item when the list/tree is active. An active list/tree has keyboard focus, an inactive does not.")); export const listActiveSelectionIconForeground = registerColor('list.activeSelectionIconForeground', { dark: null, light: null, hcDark: null, hcLight: null }, nls.localize('listActiveSelectionIconForeground', "List/Tree icon foreground color for the selected item when the list/tree is active. An active list/tree has keyboard focus, an inactive does not.")); export const listInactiveSelectionBackground = registerColor('list.inactiveSelectionBackground', { dark: '#37373D', light: '#E4E6F1', hcDark: null, hcLight: Color.fromHex('#0F4A85').transparent(0.1) }, nls.localize('listInactiveSelectionBackground', "List/Tree background color for the selected item when the list/tree is inactive. An active list/tree has keyboard focus, an inactive does not."));

Discussion:
<!-- Do Not Delete This! bugreporttemplate --<!-- Please read our Rules of Conduct: --<!-- Read our guide about submitting issues: --<!-- Search existing issues to avoid creating duplicates. --<!-- Test using the latest Insiders build to see if your issue has already been fixed: --<!-- Instead of creating your report here, use 'Report Issue' from the 'Help' menu in VS Code to pre-fill useful information. --<!-- Launch with to check. --Does this issue occur when all extensions are disabled?: Yes <!-- If you answered No above, use 'Help: Start Extension Bisect' from Command Palette to try to identify the cause. --<!-- Issues caused by an extension need to be reported directly to the extension publisher. The 'Help Report Issue' dialog can assist with this. --- VS Code Version: 1.85.2 OS Version: Windows 11 Enterprise (Windows_NT x64 10.0..3007) Description During an accessibility test, we found the contrast ratio between the highlight color of the focused button in "More Actions..." in notification popup and its background is not high enough under "Default Dark Modern" theme. Highlight Color: Background Color: Contrast Ratio: 1.346:1 Required Contrast Ratio: 3:1 !
I think this refers to the background color of the gear icon in the toolbar of a notification relative to the background color of the notification.
The bug reported on my side particularly specified the "Manage Extension" button highlight color and the background color of that actions popup under settings icon in the notification.
Looks like it's about the blue on black bg, in that case this applies to all the web menus in VS Code.
yes, it's about the blue highlight and black background.
A11yMAS; #A11yTCS; #A11ySev2; #DesktopApp; #Win32; #Visual Studio Code Client; #BM-VisualStudioCodeClient-Win32-Aug2023; #WCAG1.4.11; #Non-text Contrast;
Hi, is there any update on the plan of fixing this accessibility bug?
putting this on the March plan.
Hi, may I check if the fix is included in v1.88.0?
Hi, I have checked v1.88.0 but it seems the active color is still not the one you changed to in your PR. Did I miss something?

Verified with the Dark Modern theme, but do we also have to fix this with the Dark+ or Dark (Visual Studio) themes?
Thanks, I think it's fine we only fix it in default dark theme for now. The test team doesn't require that in other themes so far.