threema-web/src/sass/components/_links.scss

// Based on http://mrmrs.io/links/
a {
    text-decoration: none;
    transition: color .4s;
    color: #265C83;

    &:link, &:visited {
        color: #265C83;
    }
    &:hover {
        color: lighten(#265C83, 30%);
    }
    &:active {
        transition: color .3s;
        color: #007BE6;
    }
}