Update focusBorder color to pass color contrast ratio (fixes #99244)

src/vs/platform/theme/common/colorRegistry.ts

@@ -178,7 +178,7 @@ export const errorForeground = registerColor('errorForeground', { dark: '#F48771
 export const descriptionForeground = registerColor('descriptionForeground', { light: '#717171', dark: transparent(foreground, 0.7), hc: transparent(foreground, 0.7) }, nls.localize('descriptionForeground', "Foreground color for description text providing additional information, for example for a label."));
 export const iconForeground = registerColor('icon.foreground', { dark: '#C5C5C5', light: '#424242', hc: '#FFFFFF' }, nls.localize('iconForeground', "The default color for icons in the workbench."));
 
-export const focusBorder = registerColor('focusBorder', { dark: Color.fromHex('#0E639C').transparent(0.8), light: Color.fromHex('#007ACC').transparent(0.4), hc: '#F38518' }, nls.localize('focusBorder', "Overall border color for focused elements. This color is only used if not overridden by a component."));
+export const focusBorder = registerColor('focusBorder', { dark: '#007FD4', light: '#0090F1', hc: '#F38518' }, nls.localize('focusBorder', "Overall border color for focused elements. This color is only used if not overridden by a component."));
 
 export const contrastBorder = registerColor('contrastBorder', { light: null, dark: null, hc: '#6FC3DF' }, nls.localize('contrastBorder', "An extra border around elements to separate them from others for greater contrast."));
 export const activeContrastBorder = registerColor('contrastActiveBorder', { light: null, dark: null, hc: focusBorder }, nls.localize('activeContrastBorder', "An extra border around active elements to separate them from others for greater contrast."));