CSS Live Demo: -webkit-text-stroke-color Click the demo button below!
selector {
    -webkit-text-stroke-color: <color>
}
/* <color> values */
-webkit-text-stroke-color: red;
-webkit-text-stroke-color: #00a0e9;
-webkit-text-stroke-color: currentcolor;
-webkit-text-stroke-color: rgba(0, 0, 0, 0.4);

/* Global values */
-webkit-text-stroke-color: inherit;
-webkit-text-stroke-color: initial;
-webkit-text-stroke-color: revert;
-webkit-text-stroke-color: revert-layer;
-webkit-text-stroke-color: unset;
<style>
    .text {
        font-size: 47px;
        font-weight: 900;
        color: white;
        -webkit-text-stroke-width: 1px;
        -webkit-text-stroke-color: red;
    }
</style>
<p class="text">TEXT STROKE</p>
Rendered Output