diff --git a/guidelines/terms/20/contrast-ratio.html b/guidelines/terms/20/contrast-ratio.html
index 66a1d522e9..98df7e4091 100644
--- a/guidelines/terms/20/contrast-ratio.html
+++ b/guidelines/terms/20/contrast-ratio.html
@@ -15,20 +15,20 @@
    
    <p class="note">Contrast ratios can range from 1 to 21 (commonly written 1:1 to 21:1).</p>
    
-   <p class="note">Because authors do not have control over user settings as to how text is rendered
-      (for example font smoothing or anti-aliasing), the contrast ratio for text can be
+   <p class="note">Because authors do not have control over user settings as to how text and non-text content is rendered
+      (for example font smoothing or anti-aliasing), the contrast ratio can be
       evaluated with anti-aliasing turned off.
    </p>
    
    <p class="note">For the purpose of Success Criteria 1.4.3 and 1.4.6, contrast is measured with respect
-      to the specified background over which the text is rendered in normal usage. If no
-      background color is specified, then white is assumed.
+      to the specified background over which the content is rendered in normal usage. If no
+      background color is specified, then white is assumed. If no
+      foreground color is specified, then black is assumed.
    </p>
    
-   <p class="note">Background color is the specified color of content over which the text is to be rendered
-      in normal usage. It is a failure if no background color is specified when the text
+   <p class="note">It is a failure if no background color is specified when the foreground
       color is specified, because the user's default background color is unknown and cannot
-      be evaluated for sufficient contrast. For the same reason, it is a failure if no text
+      be evaluated for sufficient contrast. For the same reason, it is a failure if no foreground
       color is specified when a background color is specified.
    </p>