@Override
    public boolean equals(final Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        final ColorXyz colorXyz = (ColorXyz) o;
        if (Double.compare(colorXyz.x, x) != 0) {
            return false;
        }
        if (Double.compare(colorXyz.y, y) != 0) {
            return false;
        }
        if (Double.compare(colorXyz.z, z) != 0) {
            return false;
        }

        return true;
    }
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