outline-color
The outline-color CSS property sets the color of the outline of an element. An outline is a line that is drawn around elements, outside the border edge, to make the element stand out.
Example
<!DOCTYPE html> <html> <head> <style> .stylinegCSS { /* make the outline blue */ outline:solid; outline-color: #0000FF; } </style> </head> <body> <div class="stylinegCSS"> Sample text </div> </body> </html>