diff --git a/Libraries/LibGfx/Color.h b/Libraries/LibGfx/Color.h
index 2b1e84837f8..9f54880b7dc 100644
--- a/Libraries/LibGfx/Color.h
+++ b/Libraries/LibGfx/Color.h
@@ -400,7 +400,8 @@ public:
 
     constexpr Color with_opacity(float opacity) const
     {
-        return with_alpha(alpha() * opacity);
+        VERIFY(opacity >= 0 && opacity <= 1);
+        return with_alpha(static_cast<u8>(round(alpha() * opacity)));
     }
 
     constexpr Color darkened(float amount = 0.5f) const
diff --git a/Tests/LibGfx/TestColor.cpp b/Tests/LibGfx/TestColor.cpp
index 39fcdc7fa24..448cdbbff24 100644
--- a/Tests/LibGfx/TestColor.cpp
+++ b/Tests/LibGfx/TestColor.cpp
@@ -25,5 +25,6 @@ TEST_CASE(all_green)
 TEST_CASE(hsv)
 {
     EXPECT_EQ(Color(51, 179, 51), Color::from_hsv(120, 0.714285714, .7));
+    EXPECT_EQ(Color(51, 179, 51, 128), Color::from_hsv(120, 0.714285714, .7).with_opacity(0.5));
     EXPECT_EQ(Color(87, 128, 77), Color::from_hsv(108, 0.4, .5));
 }
diff --git a/Tests/LibWeb/Screenshot/images/svg-gradient-userSpaceOnUse-ref.png b/Tests/LibWeb/Screenshot/images/svg-gradient-userSpaceOnUse-ref.png
index c849fa4fe56..7484fed28d4 100644
Binary files a/Tests/LibWeb/Screenshot/images/svg-gradient-userSpaceOnUse-ref.png and b/Tests/LibWeb/Screenshot/images/svg-gradient-userSpaceOnUse-ref.png differ
diff --git a/Tests/LibWeb/TestConfig.ini b/Tests/LibWeb/TestConfig.ini
index f5fd6b25ef2..bdf39884351 100644
--- a/Tests/LibWeb/TestConfig.ini
+++ b/Tests/LibWeb/TestConfig.ini
@@ -165,5 +165,4 @@ Text/input/test-http-test-server.html
 
 ; Multiple bugs are affecting these tests. To avoid having to rebase them every
 ; single time, let's deactivate them for a bit.
-Ref/input/color-hwb.html
 Screenshot/input/css-color-functions.html