Vivid Burgundy (#9F1D35)

/* Background */
.element {
    background-color: #9F1D35;
}

/* Text */
.element {
    color: #9F1D35;
}

/* Border */
.element {
    border: 1px solid #9F1D35;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #9F1D35,
        #50EDD0
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #9F1D35,
        #50EDD0
    );
}

// SCSS variable
$vivid-burgundy: #9F1D35;

// With RGB channels (useful for rgba() usage)
$vivid-burgundy-r: 159;
$vivid-burgundy-g: 29;
$vivid-burgundy-b: 53;

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