diff --git a/PIL/ImageDraw.py b/PIL/ImageDraw.py
index 7556e5ece..0e9ca832f 100644
--- a/PIL/ImageDraw.py
+++ b/PIL/ImageDraw.py
@@ -336,7 +336,7 @@ def floodfill(image, xy, value, border=None, thresh=0):
     x, y = xy
     try:
         background = pixel[x, y]
-        if background == value:
+        if _color_diff(value, background) <= thresh:
             return  # seed point already has fill color
         pixel[x, y] = value
     except (ValueError, IndexError):
diff --git a/Tests/test_imagedraw.py b/Tests/test_imagedraw.py
index a3f783322..0760acd45 100644
--- a/Tests/test_imagedraw.py
+++ b/Tests/test_imagedraw.py
@@ -409,15 +409,15 @@ class TestImageDraw(PillowTestCase):
         # Arrange
         im = Image.new("RGB", (W, H))
         draw = ImageDraw.Draw(im)
-        draw.rectangle(BBOX2, outline="yellow", fill="green")
+        draw.rectangle(BBOX2, outline="darkgreen", fill="green")
         centre_point = (int(W/2), int(H/2))
 
         # Act
         ImageDraw.floodfill(
             im, centre_point, ImageColor.getrgb("red"),
-            thresh=100)
+            thresh=30)
         del draw
-
+        im.save("x.png")
         # Assert
         self.assert_image_equal(
             im, Image.open("Tests/images/imagedraw_floodfill2.png"))