a标签默认颜色

<a href="www.baidu.com">test</a>
<span style="color:#428bca;">test</span>
<span style="color:#2a6496;">test</span>
<span style="color:#0066cc;">test</span>
<span style="color:#0070b8;">test</span>
<span style="color:#387cdf;">test</span>

#387cdf效果最好