Palatinate Blue (#273BE2)

/* Background */
.element {
    background-color: #273BE2;
}

/* Text */
.element {
    color: #273BE2;
}

/* Border */
.element {
    border: 1px solid #273BE2;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #273BE2,
        #FAF5CA
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #273BE2,
        #FAF5CA
    );
}

// SCSS variable
$palatinate-blue: #273BE2;

// With RGB channels (useful for rgba() usage)
$palatinate-blue-r: 39;
$palatinate-blue-g: 59;
$palatinate-blue-b: 226;

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