<!DOCTYPE html>
<style>
.box {
    position: relative;
    display: inline-block;
    margin: 5px;
    width: 40px;
    height: 40px;
}
</style>

<p>The boxes below should all be uniform in color. Any difference is likely to be extremely subtle.</p>
<div class="box" style="background-color: red"></div>
<div class="box" style="background-color: yellow"></div>
<div class="box" style="background-color: green"></div>
<div class="box" style="background-color: orange"></div>
<div class="box" style="background-color: purple"></div>
<div class="box" style="background-color: gray"></div>
<div class="box" style="background-color: cornflowerblue"></div>
<div class="box" style="background-color: rgb(98, 178, 23)"></div>
<div class="box" style="background-color: rgb(111, 62, 198)"></div>
<div class="box" style="background-color: rgb(232, 176, 101)"></div>