Persian Red (#CC3333)

/* Background */
.element {
    background-color: #CC3333;
}

/* Text */
.element {
    color: #CC3333;
}

/* Border */
.element {
    border: 1px solid #CC3333;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #CC3333,
        #33CCCC
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #CC3333,
        #33CCCC
    );
}

// SCSS variable
$persian-red: #CC3333;

// With RGB channels (useful for rgba() usage)
$persian-red-r: 204;
$persian-red-g: 51;
$persian-red-b: 51;

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