Merge pull request #35549 from nextcloud/enh/a11y-contrast-borders

Add new border color variable and adjust primary color for increased contrast

Author: Pytal

apps/theming/css/default.css

@@ -32,6 +32,7 @@
   --color-box-shadow: rgba(var(--color-box-shadow-rgb), 0.5);
   --color-border: #ededed;
   --color-border-dark: #dbdbdb;
+  --color-border-maxcontrast: #949494;
   --font-face: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Cantarell, Ubuntu, 'Helvetica Neue', Arial, sans-serif, 'Noto Color Emoji', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
   --default-font-size: 15px;
   --animation-quick: 100ms;
@@ -55,21 +56,21 @@
   --background-invert-if-bright: invert(100%);
   --background-image-invert-if-bright: no;
   --primary-invert-if-bright: no;
-  --color-primary: #00639a;
+  --color-primary: #006aa3;
   --color-primary-default: #0082c9;
   --color-primary-text: #ffffff;
-  --color-primary-hover: #3282ae;
-  --color-primary-light: #e5eff4;
-  --color-primary-light-text: #00273d;
-  --color-primary-light-hover: #dbe4e9;
+  --color-primary-hover: #3287b5;
+  --color-primary-light: #e5f0f5;
+  --color-primary-light-text: #002a41;
+  --color-primary-light-hover: #dbe5ea;
   --color-primary-text-dark: #ededed;
-  --color-primary-element: #00639a;
+  --color-primary-element: #006aa3;
   --color-primary-element-default-hover: #329bd3;
   --color-primary-element-text: #ffffff;
-  --color-primary-element-hover: #3282ae;
-  --color-primary-element-light: #e5eff4;
-  --color-primary-element-light-text: #00273d;
-  --color-primary-element-light-hover: #dbe4e9;
+  --color-primary-element-hover: #3287b5;
+  --color-primary-element-light: #e5f0f5;
+  --color-primary-element-light-text: #002a41;
+  --color-primary-element-light-hover: #dbe5ea;
   --color-primary-element-text-dark: #ededed;
   --gradient-primary-background: linear-gradient(40deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
   --image-background-default: url('/apps/theming/img/background/kamil-porembinski-clouds.jpg');

apps/theming/lib/Service/BackgroundService.php

@@ -46,7 +46,7 @@ class BackgroundService {
 	// true when the background is bright and need dark icons
 	public const THEMING_MODE_DARK = 'dark';
 	public const DEFAULT_COLOR = '#0082c9';
-	public const DEFAULT_ACCESSIBLE_COLOR = '#00639a';
+	public const DEFAULT_ACCESSIBLE_COLOR = '#006aa3';
 
 	public const BACKGROUND_SHIPPED = 'shipped';
 	public const BACKGROUND_CUSTOM = 'custom';

apps/theming/lib/Themes/DarkTheme.php

@@ -91,6 +91,7 @@ public function getCSSVariables(): array {
 
 				'--color-border' => $this->util->lighten($colorMainBackground, 7),
 				'--color-border-dark' => $this->util->lighten($colorMainBackground, 14),
+				'--color-border-maxcontrast' => $this->util->lighten($colorMainBackground, 30),
 
 				'--background-invert-if-dark' => 'invert(100%)',
 				'--background-invert-if-bright' => 'no',

apps/theming/lib/Themes/DefaultTheme.php

@@ -157,6 +157,7 @@ public function getCSSVariables(): array {
 
 			'--color-border' => $this->util->darken($colorMainBackground, 7),
 			'--color-border-dark' => $this->util->darken($colorMainBackground, 14),
+			'--color-border-maxcontrast' => $this->util->darken($colorMainBackground, 42),
 
 			'--font-face' => "-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Cantarell, Ubuntu, 'Helvetica Neue', Arial, sans-serif, 'Noto Color Emoji', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol'",
 			'--default-font-size' => '15px',