Old Gold (#CFB53B)

/* Background */
.element {
    background-color: #CFB53B;
}

/* Text */
.element {
    color: #CFB53B;
}

/* Border */
.element {
    border: 1px solid #CFB53B;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #CFB53B,
        #3B55CF
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #CFB53B,
        #3B55CF
    );
}

// SCSS variable
$old-gold: #CFB53B;

// With RGB channels (useful for rgba() usage)
$old-gold-r: 207;
$old-gold-g: 181;
$old-gold-b: 59;

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