Light Blue (#ADD8E6)

/* Background */
.element {
    background-color: #ADD8E6;
}

/* Text */
.element {
    color: #ADD8E6;
}

/* Border */
.element {
    border: 1px solid #ADD8E6;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #ADD8E6,
        #E6BBAD
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #ADD8E6,
        #E6BBAD
    );
}

// SCSS variable
$light-blue: #ADD8E6;

// With RGB channels (useful for rgba() usage)
$light-blue-r: 173;
$light-blue-g: 216;
$light-blue-b: 230;

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