diff --git a/src/textual/color.py b/src/textual/color.py
index 35dadb0e67..02e5d07e18 100644
--- a/src/textual/color.py
+++ b/src/textual/color.py
@@ -598,8 +598,8 @@ def colors(self) -> list[Color]:
             add_color = colors.append
             (stop1, color1), (stop2, color2) = self._stops[0:2]
             for step_position in range(accuracy):
-                step = step_position / accuracy
-                while step >= stop2:
+                step = step_position / (accuracy - 1)
+                while step > stop2:
                     position += 1
                     (stop1, color1), (stop2, color2) = self._stops[
                         position : position + 2
@@ -627,7 +627,8 @@ def get_color(self, position: float) -> Color:
         Returns:
             A Textual color.
         """
-        color_index = int(clamp(position, 0, 1) * (self._accuracy - 1))
+        accuracy = self._accuracy - 1
+        color_index = int(clamp(position * accuracy, 0, accuracy))
         return self.colors[color_index]
 
     def get_rich_color(self, position: float) -> RichColor:
@@ -641,7 +642,8 @@ def get_rich_color(self, position: float) -> RichColor:
         Returns:
             A (Rich) color.
         """
-        color_index = int(clamp(position, 0, 1) * (self._accuracy - 1))
+        accuracy = self._accuracy - 1
+        color_index = int(clamp(position * accuracy, 0, accuracy))
         return self.rich_colors[color_index]
 
 
diff --git a/tests/test_color.py b/tests/test_color.py
index bdae7a7cbb..3cda9854a2 100644
--- a/tests/test_color.py
+++ b/tests/test_color.py
@@ -245,8 +245,9 @@ def test_gradient_errors():
 def test_gradient():
     gradient = Gradient(
         (0, Color(255, 0, 0)),
-        (0.5, Color(0, 0, 255)),
+        (0.5, "blue"),
         (1, Color(0, 255, 0)),
+        accuracy=11,
     )
 
     assert gradient.get_color(-1) == Color(255, 0, 0)
@@ -255,7 +256,3 @@ def test_gradient():
     assert gradient.get_color(1.2) == Color(0, 255, 0)
     assert gradient.get_color(0.5) == Color(0, 0, 255)
     assert gradient.get_color(0.7) == Color(0, 101, 153)
-
-    gradient._stops.pop()
-    with pytest.raises(AssertionError):
-        gradient.get_color(1.0)