Teal

#008080

rgb(0, 128, 128)

hsl(180, 100%, 25%)

.element {
  background-color: #008080;
  color: #008080;
  border: 1px solid #008080;
}

.element {
  background-color: rgb(0, 128, 128);
  color: rgb(0, 128, 128);
}

.element {
  background-color: hsl(180, 100%, 25%);
  color: hsl(180, 100%, 25%);
}

<div style="background-color: #008080; color: white;">
  Content
</div>

element.style.backgroundColor = "#008080";
element.style.color = "#008080";

<div style={{ backgroundColor: "#008080", color: "white" }}>
  Content
</div>