Fix border color contrast

Signed-off-by: Christopher Ng <chrng8@gmail.com>

Author: Pytal

apps/theming/css/default.css

@@ -58,15 +58,15 @@
   --image-background-default: url('/core/img/app-background.jpg');
   --color-background-plain: #0082c9;
   --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-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;

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 SHIPPED_BACKGROUNDS = [
 		'anatoly-mikhaltsov-butterfly-wing-scale.jpg' => [

apps/theming/lib/Themes/DarkTheme.php

@@ -89,8 +89,8 @@ public function getCSSVariables(): array {
 				'--color-box-shadow' => $colorBoxShadow,
 				'--color-box-shadow-rgb' => $colorBoxShadowRGB,
 
-				'--color-border' => $this->util->lighten($colorMainBackground, 7),
-				'--color-border-dark' => $this->util->lighten($colorMainBackground, 14),
+				'--color-border' => $this->util->lighten($colorMainBackground, 30),
+				'--color-border-dark' => $this->util->lighten($colorMainBackground, 38),
 
 				'--background-invert-if-dark' => 'invert(100%)',
 				'--background-invert-if-bright' => 'no',

apps/theming/lib/Themes/DefaultTheme.php

@@ -155,8 +155,8 @@ public function getCSSVariables(): array {
 			'--color-box-shadow-rgb' => $colorBoxShadowRGB,
 			'--color-box-shadow' => "rgba(var(--color-box-shadow-rgb), 0.5)",
 
-			'--color-border' => $this->util->darken($colorMainBackground, 7),
-			'--color-border-dark' => $this->util->darken($colorMainBackground, 14),
+			'--color-border' => $this->util->darken($colorMainBackground, 42),
+			'--color-border-dark' => $this->util->darken($colorMainBackground, 50),
 
 			'--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',