Teal Green (#006D5B)

/* Background */
.element {
    background-color: #006D5B;
}

/* Text */
.element {
    color: #006D5B;
}

/* Border */
.element {
    border: 1px solid #006D5B;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #006D5B,
        #DA0024
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #006D5B,
        #DA0024
    );
}

// SCSS variable
$teal-green: #006D5B;

// With RGB channels (useful for rgba() usage)
$teal-green-r: 0;
$teal-green-g: 109;
$teal-green-b: 91;

// Usage
.element {
    background-color: $teal-green;
    color: rgba($teal-green-r, $teal-green-g, $teal-green-b, 0.8);
}