xyzToLab function
Convert a XYZ color to CIE-L*ab.
Implementation
List<num> xyzToLab(num x, num y, num z) {
x = x / 95.047;
y = y / 100.0;
z = z / 108.883;
if (x > 0.008856) {
x = pow(x, 1 / 3.0);
} else {
x = (7.787 * x) + (16 / 116.0);
}
if (y > 0.008856) {
y = pow(y, 1 / 3.0);
} else {
y = (7.787 * y) + (16 / 116.0);
}
if (z > 0.008856) {
z = pow(z, 1 / 3.0);
} else {
z = (7.787 * z) + (16 / 116.0);
}
return [(116.0 * y) - 16, 500.0 * (x - y), 200.0 * (y - z)];
}