Dark Pastel Purple (#966FD6)

/* Background */
.element {
    background-color: #966FD6;
}

/* Text */
.element {
    color: #966FD6;
}

/* Border */
.element {
    border: 1px solid #966FD6;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #966FD6,
        #DBEAC2
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #966FD6,
        #DBEAC2
    );
}

// SCSS variable
$dark-pastel-purple: #966FD6;

// With RGB channels (useful for rgba() usage)
$dark-pastel-purple-r: 150;
$dark-pastel-purple-g: 111;
$dark-pastel-purple-b: 214;

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