Banana Yellow (#FFE135)

/* Background */
.element {
    background-color: #FFE135;
}

/* Text */
.element {
    color: #FFE135;
}

/* Border */
.element {
    border: 1px solid #FFE135;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #FFE135,
        #3553FF
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #FFE135,
        #3553FF
    );
}

// SCSS variable
$banana-yellow: #FFE135;

// With RGB channels (useful for rgba() usage)
$banana-yellow-r: 255;
$banana-yellow-g: 225;
$banana-yellow-b: 53;

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