Eerie Black (#1B1B1B)

/* Background */
.element {
    background-color: #1B1B1B;
}

/* Text */
.element {
    color: #1B1B1B;
}

/* Border */
.element {
    border: 1px solid #1B1B1B;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #1B1B1B,
        #1B1B1B
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #1B1B1B,
        #1B1B1B
    );
}

// SCSS variable
$eerie-black: #1B1B1B;

// With RGB channels (useful for rgba() usage)
$eerie-black-r: 27;
$eerie-black-g: 27;
$eerie-black-b: 27;

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