Rose Red (#C21E56)

/* Background */
.element {
    background-color: #C21E56;
}

/* Text */
.element {
    color: #C21E56;
}

/* Border */
.element {
    border: 1px solid #C21E56;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #C21E56,
        #8EF6D2
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #C21E56,
        #8EF6D2
    );
}

// SCSS variable
$rose-red: #C21E56;

// With RGB channels (useful for rgba() usage)
$rose-red-r: 194;
$rose-red-g: 30;
$rose-red-b: 86;

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