Café Noir (#4B3621)

/* Background */
.element {
    background-color: #4B3621;
}

/* Text */
.element {
    color: #4B3621;
}

/* Border */
.element {
    border: 1px solid #4B3621;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #4B3621,
        #214B75
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #4B3621,
        #214B75
    );
}

// SCSS variable
$café-noir: #4B3621;

// With RGB channels (useful for rgba() usage)
$café-noir-r: 75;
$café-noir-g: 54;
$café-noir-b: 33;

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