Blue Yonder (#5072A7)

/* Background */
.element {
    background-color: #5072A7;
}

/* Text */
.element {
    color: #5072A7;
}

/* Border */
.element {
    border: 1px solid #5072A7;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #5072A7,
        #D5B179
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #5072A7,
        #D5B179
    );
}

// SCSS variable
$blue-yonder: #5072A7;

// With RGB channels (useful for rgba() usage)
$blue-yonder-r: 80;
$blue-yonder-g: 114;
$blue-yonder-b: 167;

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