Vista Blue (#7C9ED9)

/* Background */
.element {
    background-color: #7C9ED9;
}

/* Text */
.element {
    color: #7C9ED9;
}

/* Border */
.element {
    border: 1px solid #7C9ED9;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #7C9ED9,
        #E9DDC9
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #7C9ED9,
        #E9DDC9
    );
}

// SCSS variable
$vista-blue: #7C9ED9;

// With RGB channels (useful for rgba() usage)
$vista-blue-r: 124;
$vista-blue-g: 158;
$vista-blue-b: 217;

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