diff --git a/modules/label/label.go b/modules/label/label.go
index ce028aa9f3b25..8e6f659fa782c 100644
--- a/modules/label/label.go
+++ b/modules/label/label.go
@@ -21,6 +21,19 @@ type Label struct {
 	ExclusiveOrder int    `yaml:"exclusive_order,omitempty"`
 }
 
+type ErrInvalidLabelColor struct {
+	Color string
+}
+
+func (e *ErrInvalidLabelColor) Error() string {
+	return fmt.Sprintf("invalid label color: %s", e.Color)
+}
+
+func IsErrInvalidLabelColor(err error) bool {
+	_, ok := err.(*ErrInvalidLabelColor)
+	return ok
+}
+
 // NormalizeColor normalizes a color string to a 6-character hex code
 func NormalizeColor(color string) (string, error) {
 	// normalize case
@@ -32,7 +45,9 @@ func NormalizeColor(color string) (string, error) {
 	}
 
 	if !colorPattern.MatchString(color) {
-		return "", fmt.Errorf("bad color code: %s", color)
+		return "", &ErrInvalidLabelColor{
+			Color: color,
+		}
 	}
 
 	// convert 3-character shorthand into 6-character version
diff --git a/routers/web/org/org_labels.go b/routers/web/org/org_labels.go
index 456ed3f01ed3b..a68b6cf9703dd 100644
--- a/routers/web/org/org_labels.go
+++ b/routers/web/org/org_labels.go
@@ -52,7 +52,12 @@ func NewLabel(ctx *context.Context) {
 		ExclusiveOrder: form.ExclusiveOrder,
 	}
 	if err := issues_model.NewLabel(ctx, l); err != nil {
-		ctx.ServerError("NewLabel", err)
+		if label.IsErrInvalidLabelColor(err) {
+			ctx.Flash.Error(err.Error())
+			ctx.Redirect(ctx.Org.OrgLink + "/settings/labels")
+		} else {
+			ctx.ServerError("NewLabel", err)
+		}
 		return
 	}
 	ctx.Redirect(ctx.Org.OrgLink + "/settings/labels")
@@ -79,7 +84,12 @@ func UpdateLabel(ctx *context.Context) {
 	l.Color = form.Color
 	l.SetArchived(form.IsArchived)
 	if err := issues_model.UpdateLabel(ctx, l); err != nil {
-		ctx.ServerError("UpdateLabel", err)
+		if label.IsErrInvalidLabelColor(err) {
+			ctx.Flash.Error(err.Error())
+			ctx.Redirect(ctx.Org.OrgLink + "/settings/labels")
+		} else {
+			ctx.ServerError("UpdateLabel", err)
+		}
 		return
 	}
 	ctx.Redirect(ctx.Org.OrgLink + "/settings/labels")
diff --git a/routers/web/repo/issue_label.go b/routers/web/repo/issue_label.go
index f9c41adbcfd33..21c2d77c0a1b9 100644
--- a/routers/web/repo/issue_label.go
+++ b/routers/web/repo/issue_label.go
@@ -119,7 +119,12 @@ func NewLabel(ctx *context.Context) {
 		Color:          form.Color,
 	}
 	if err := issues_model.NewLabel(ctx, l); err != nil {
-		ctx.ServerError("NewLabel", err)
+		if label.IsErrInvalidLabelColor(err) {
+			ctx.Flash.Error(err.Error())
+			ctx.Redirect(ctx.Repo.RepoLink + "/labels")
+		} else {
+			ctx.ServerError("NewLabel", err)
+		}
 		return
 	}
 	ctx.Redirect(ctx.Repo.RepoLink + "/labels")
@@ -146,7 +151,12 @@ func UpdateLabel(ctx *context.Context) {
 
 	l.SetArchived(form.IsArchived)
 	if err := issues_model.UpdateLabel(ctx, l); err != nil {
-		ctx.ServerError("UpdateLabel", err)
+		if label.IsErrInvalidLabelColor(err) {
+			ctx.Flash.Error(err.Error())
+			ctx.Redirect(ctx.Repo.RepoLink + "/labels")
+		} else {
+			ctx.ServerError("UpdateLabel", err)
+		}
 		return
 	}
 	ctx.Redirect(ctx.Repo.RepoLink + "/labels")