Dark Lavender (#734F96)

/* Background */
.element {
    background-color: #734F96;
}

/* Text */
.element {
    color: #734F96;
}

/* Border */
.element {
    border: 1px solid #734F96;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #734F96,
        #95C864
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #734F96,
        #95C864
    );
}

// SCSS variable
$dark-lavender: #734F96;

// With RGB channels (useful for rgba() usage)
$dark-lavender-r: 115;
$dark-lavender-g: 79;
$dark-lavender-b: 150;

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