diff --git a/egui/src/widgets/color_picker.rs b/egui/src/widgets/color_picker.rs
index 4724166a..1c87035d 100644
--- a/egui/src/widgets/color_picker.rs
+++ b/egui/src/widgets/color_picker.rs
@@ -290,7 +290,15 @@ fn color_picker_hsvag_2d(ui: &mut Ui, hsva: &mut HsvaGamma, alpha: Alpha) {
 
         let HsvaGamma { h, s, v, a: _ } = hsva;
 
-        color_slider_1d(ui, h, |h| HsvaGamma { h, ..opaque }.into());
+        color_slider_1d(ui, h, |h| {
+            HsvaGamma {
+                h,
+                s: 1.0,
+                v: 1.0,
+                a: 1.0,
+            }
+            .into()
+        });
         ui.label("Hue");
         ui.end_row();