Celadon Green (#2F847C)

/* Background */
.element {
    background-color: #2F847C;
}

/* Text */
.element {
    color: #2F847C;
}

/* Border */
.element {
    border: 1px solid #2F847C;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #2F847C,
        #D33544
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #2F847C,
        #D33544
    );
}

// SCSS variable
$celadon-green: #2F847C;

// With RGB channels (useful for rgba() usage)
$celadon-green-r: 47;
$celadon-green-g: 132;
$celadon-green-b: 124;

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