Light Green (#90EE90)

/* Background */
.element {
    background-color: #90EE90;
}

/* Text */
.element {
    color: #90EE90;
}

/* Border */
.element {
    border: 1px solid #90EE90;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #90EE90,
        #F5E7F5
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #90EE90,
        #F5E7F5
    );
}

// SCSS variable
$light-green: #90EE90;

// With RGB channels (useful for rgba() usage)
$light-green-r: 144;
$light-green-g: 238;
$light-green-b: 144;

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