diff --git a/bigbluebutton-html5/imports/ui/components/user-avatar/color-generator.js b/bigbluebutton-html5/imports/ui/components/user-avatar/color-generator.js
index 8551a2302e1741572675481566cac82174e12b95..a17174de8d2d2b150b60403c2eac5dc76c3c764b 100644
--- a/bigbluebutton-html5/imports/ui/components/user-avatar/color-generator.js
+++ b/bigbluebutton-html5/imports/ui/components/user-avatar/color-generator.js
@@ -26,6 +26,7 @@ const stringToPastelColour = (str) => {
 };
 
 // https://www.w3.org/TR/WCAG20/#relativeluminancedef
+// http://entropymine.com/imageworsener/srgbformula/
 const relativeLuminance = (rgb) => {
   let tmp = {};
 
@@ -91,7 +92,7 @@ const addShadeIfNoContrast = (rgb) => {
 
   let cr = contrastRatio(base, rgb);
 
-  if (cr > 2.5) {
+  if (cr > 4.5) {
     return rgb;
   }
 
diff --git a/bigbluebutton-html5/imports/ui/components/user-avatar/styles.scss b/bigbluebutton-html5/imports/ui/components/user-avatar/styles.scss
index f623c36762cae2d6a2dda13de6a848c124abe852..88c341a277437ac9ca1c5002b4e6209eadaa409e 100644
--- a/bigbluebutton-html5/imports/ui/components/user-avatar/styles.scss
+++ b/bigbluebutton-html5/imports/ui/components/user-avatar/styles.scss
@@ -32,8 +32,8 @@ $moderator-bg: $color-primary;
 .userStatus {
   position: absolute;
   background-color: $color-white;
-  width: 0.70rem;
-  height: 0.70rem;
+  width: 0.625rem;
+  height: 0.625rem;
   border-radius: 2px;
   top: 0;
   left: 0;
@@ -58,10 +58,10 @@ $moderator-bg: $color-primary;
   justify-content: center;
   position: absolute;
   border-radius: 50%;
-  width: 0.70rem;
-  height: 0.70rem;
-  top: 1.5rem;
-  left: 1.5rem;
+  width: 0.625rem;
+  height: 0.625rem;
+  top: 1.575rem;
+  left: 1.575rem;
   -webkit-box-shadow: 0 0 0 1px $color-white;
   -moz-box-shadow: 0 0 0 1px $color-white;
   box-shadow: 0 0 0 1px $color-white;
@@ -78,8 +78,12 @@ $moderator-bg: $color-primary;
 }
 
 .microphoneMuted {
+  margin-top: 0.05rem;
   width: 2px;
   transform: rotate(45deg);
-  height: 0.7rem;
+  height: 0.60rem;
   background-color: $color-white;
 }
+
+// 10px x
+// 16px 1