Yale Blue (#0F4D92)

/* Background */
.element {
    background-color: #0F4D92;
}

/* Text */
.element {
    color: #0F4D92;
}

/* Border */
.element {
    border: 1px solid #0F4D92;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #0F4D92,
        #92540F
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #0F4D92,
        #92540F
    );
}

// SCSS variable
$yale-blue: #0F4D92;

// With RGB channels (useful for rgba() usage)
$yale-blue-r: 15;
$yale-blue-g: 77;
$yale-blue-b: 146;

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