Blue Sapphire (#126180)

/* Background */
.element {
    background-color: #126180;
}

/* Text */
.element {
    color: #126180;
}

/* Border */
.element {
    border: 1px solid #126180;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #126180,
        #ED5013
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #126180,
        #ED5013
    );
}

// SCSS variable
$blue-sapphire: #126180;

// With RGB channels (useful for rgba() usage)
$blue-sapphire-r: 18;
$blue-sapphire-g: 97;
$blue-sapphire-b: 128;

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