diff --git a/tests/visualisation/test_colours.py b/tests/visualisation/test_colours.py
index e2b07d2..0d3bae2 100644
--- a/tests/visualisation/test_colours.py
+++ b/tests/visualisation/test_colours.py
@@ -27,8 +27,8 @@ def test_integer_colour_to_float():
 
 def test_get_yellow():
     """Checks that get yellow returns the right value"""
-    assert cls.get_yellow(1.0)[1] == [1.0, 1.0, 1.0]
+    assert cls.get_yellow(1.0)[1] == [1.0, 1.0, 142./255.]
 
 def test_get_green():
     """Checks that get green returns the right value"""
-    assert cls.get_green(1.0)[1] == [1.0, 1.0, 1.0]
+    assert cls.get_green(1.0)[1] == [233./255., 1.0, 233./255.]