Violet Blue (#324AB2)

/* Background */
.element {
    background-color: #324AB2;
}

/* Text */
.element {
    color: #324AB2;
}

/* Border */
.element {
    border: 1px solid #324AB2;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #324AB2,
        #E9D57B
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #324AB2,
        #E9D57B
    );
}

// SCSS variable
$violet-blue: #324AB2;

// With RGB channels (useful for rgba() usage)
$violet-blue-r: 50;
$violet-blue-g: 74;
$violet-blue-b: 178;

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