diff --git a/lib/xmet/hodograph.py b/lib/xmet/hodograph.py
index 84af9ca..7b8cbfc 100644
--- a/lib/xmet/hodograph.py
+++ b/lib/xmet/hodograph.py
@@ -97,15 +97,17 @@ class Hodograph():
 
         cr.restore()
 
+    COLORS = {
+          500: (1.0, 0.4, 1.0),
+         3000: (1.0, 0.4, 0.4),
+         7000: (0.4, 1.0, 0.4),
+        10000: (0.4, 0.4, 1.0)
+    }
+
     def color(self, height: float):
-        if height <= 500:
-            return (1, 0, 1)
-        elif height <= 3000:
-            return (1, 0, 0)
-        elif height <= 7000:
-            return (0, 1, 0)
-        elif height <= 10000:
-            return (0, 0, 1)
+        for key in self.COLORS:
+            if height < key:
+                return self.COLORS[key]
 
     def draw_samples(self,
                      cr: cairo.Context,
@@ -152,6 +154,29 @@ class Hodograph():
         cr.stroke()
         cr.restore()
 
+    def draw_height_legends(self, cr: cairo.Context, x, y):
+        width    = 0.02380952 * self.width
+        interval = 0.05952380 * self.width
+        offset   = 0
+
+        for height in self.COLORS:
+            color = self.COLORS[height]
+
+            cr.save()
+            cr.set_source_rgb(*color)
+            cr.rectangle(offset + x, y, width, width)
+            cr.fill()
+            cr.restore()
+
+            cr.rectangle(offset + x, y, width, width)
+            cr.stroke()
+
+            cr.move_to(offset + x, y + 2*width)
+            cr.show_text("%dkm" % (height / 1000))
+            cr.stroke()
+
+            offset += interval
+
     def draw(self, cr: cairo.Context, x, y, samples: Iterable[SoundingSample]):
         self.draw_speed_lines(cr, x, y)
         self.draw_direction_lines(cr, x, y)
@@ -160,3 +185,4 @@ class Hodograph():
 
         self.draw_speed_legends(cr, x, y)
         self.draw_direction_legends(cr, x, y)
+        self.draw_height_legends(cr, x, y)