May Green (#4C9141)

/* Background */
.element {
    background-color: #4C9141;
}

/* Text */
.element {
    color: #4C9141;
}

/* Border */
.element {
    border: 1px solid #4C9141;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #4C9141,
        #BD54CE
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #4C9141,
        #BD54CE
    );
}

// SCSS variable
$may-green: #4C9141;

// With RGB channels (useful for rgba() usage)
$may-green-r: 76;
$may-green-g: 145;
$may-green-b: 65;

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