Only 16 color names are officially recognized by the HTML standard. These are listed in Table A-3.
Aqua | Navy |
Black | Olive |
Blue | Purple |
Fuchsia | Red |
Gray | Silver |
Green | Teal |
Lime | White |
Maroon | Yellow |
Although many browsers recognize more names, the safest option to get better colors is to use a color code (Section 6.2.1.1).