Orange Yellow (#F8D568)

/* Background */
.element {
    background-color: #F8D568;
}

/* Text */
.element {
    color: #F8D568;
}

/* Border */
.element {
    border: 1px solid #F8D568;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #F8D568,
        #688BF8
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #F8D568,
        #688BF8
    );
}

// SCSS variable
$orange-yellow: #F8D568;

// With RGB channels (useful for rgba() usage)
$orange-yellow-r: 248;
$orange-yellow-g: 213;
$orange-yellow-b: 104;

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