Red (NCS) (#C40233)

/* Background */
.element {
    background-color: #C40233;
}

/* Text */
.element {
    color: #C40233;
}

/* Border */
.element {
    border: 1px solid #C40233;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #C40233,
        #8AFEE1
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #C40233,
        #8AFEE1
    );
}

// SCSS variable
$red-(ncs): #C40233;

// With RGB channels (useful for rgba() usage)
$red-(ncs)-r: 196;
$red-(ncs)-g: 2;
$red-(ncs)-b: 51;

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