Cadmium Red (#E30022)

/* Background */
.element {
    background-color: #E30022;
}

/* Text */
.element {
    color: #E30022;
}

/* Border */
.element {
    border: 1px solid #E30022;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #E30022,
        #00E3C1
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #E30022,
        #00E3C1
    );
}

// SCSS variable
$cadmium-red: #E30022;

// With RGB channels (useful for rgba() usage)
$cadmium-red-r: 227;
$cadmium-red-g: 0;
$cadmium-red-b: 34;

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