International Klein Blue (#002FA7)

/* Background */
.element {
    background-color: #002FA7;
}

/* Text */
.element {
    color: #002FA7;
}

/* Border */
.element {
    border: 1px solid #002FA7;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #002FA7,
        #FFCD4F
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #002FA7,
        #FFCD4F
    );
}

// SCSS variable
$international-klein-blue: #002FA7;

// With RGB channels (useful for rgba() usage)
$international-klein-blue-r: 0;
$international-klein-blue-g: 47;
$international-klein-blue-b: 167;

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