@Override
    public String toString() {
        return "{X: " + x + ", Y: " + y + ", Z: " + z + "}";
    }
A constant for color blue. Color components are:

<pre>
    X: 18.05
    Y:  7.22
    Z: 95.05
</pre>
src/main/java/org/apache/commons/imaging/color/ColorXyz.java