SONAR-16731 [891652] An icon lacks 3 to 1 contrast ratio

server/sonar-web/src/main/js/components/controls/SearchBox.css

@@ -77,7 +77,7 @@
   position: absolute;
   top: 4px;
   left: 4px;
-  color: var(--gray60);
+  color: var(--gray52);
   transition: color 0.3s ease;
 }
 

server/sonar-web/src/main/js/components/controls/Select.tsx

@@ -40,7 +40,7 @@ import { colors, others, sizes, zIndexes } from '../../app/theme';
 import { ClearButton } from './buttons';
 
 const ArrowSpan = styled.span`
-  border-color: #999 transparent transparent;
+  border-color: ${colors.gray52} transparent transparent;
   border-style: solid;
   border-width: 4px 4px 2px;
   display: inline-block;