Grayish colors

Original: http://jsfiddle.net/leaverou/AxMe2/

by Jens Grochtdreis

CSS

a {
    float:left;
    padding:2em 3em;
    margin:.3em;
    color:white;
    text-decoration:none;
    border-radius:.2em;
}

JavaScript

for(var r=7; r<=9; r++) {
    for(var g=7; g<=9; g++) {
        for(var b=7; b<=9; b++) {
            var a = document.createElement('a'),
                color = '#' + r*10 + g*10 + b*10;
            
            a.style.background = a.innerHTML = color;
            a.href = 'http://css.coloratum.com/#' + color;
            a.target = '_blank';
            
            document.body.appendChild(a);
        }
    }
}