JSFiddle - React, Tailwind, and code Playground

HTML

<div class="hex">
    <div class="hex inner">
        <div class="hex inner2"></div>
    </div>
</div>

CSS

.hex {
    margin-top: 70px;
    width: 208px;
    height: 120px;
    background: #6C6;
    position: relative;
}
.hex:before, .hex:after {
    content:"";
    border-left: 104px solid transparent;
    border-right: 104px solid transparent;
    position: absolute;
}
.hex:before {
    top: -59px;
    border-bottom: 60px solid #6C6;
}
.hex:after {
    bottom: -59px;
    border-top: 60px solid #6C6;
}
.hex.inner {
    background-color:blue;
    -webkit-transform: scale(.8, .8);
    -moz-transform: scale(.8, .8);
    transform: scale(.8, .8);
    z-index:1;
}
.hex.inner:before {
    border-bottom: 60px solid blue;
}
.hex.inner:after {
    border-top: 60px solid blue;
}
.hex.inner2 {
    background-color:red;
    -webkit-transform: scale(.8, .8);
    -moz-transform: scale(.8, .8);
    transform: scale(.8, .8);
    z-index:2;
}
.hex.inner2:before {
    border-bottom: 60px solid red;
}
.hex.inner2:after {
    border-top: 60px solid red;
}