Tropical Rain Forest (#00755E)

/* Background */
.element {
    background-color: #00755E;
}

/* Text */
.element {
    color: #00755E;
}

/* Border */
.element {
    border: 1px solid #00755E;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #00755E,
        #EA002E
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #00755E,
        #EA002E
    );
}

// SCSS variable
$tropical-rain-forest: #00755E;

// With RGB channels (useful for rgba() usage)
$tropical-rain-forest-r: 0;
$tropical-rain-forest-g: 117;
$tropical-rain-forest-b: 94;

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