Doctrine of Colourable Legislation

The doctrine of colorable legislation deals with situations where a legislative body attempts to enact a law under its apparent powers, but in reality, the law is beyond its constitutional authority. In such cases, the law is considered "colorable," meaning it has the appearance of validity but lacks substance.

Courts often apply this doctrine to prevent abuses of power and to ensure that legislative bodies adhere to their constitutionally defined limits. When a law is deemed colorable, courts may declare it unconstitutional and void.

The concept is closely related to the principle of legislative competence, ensuring that the legislative body doesn't exceed its jurisdiction or encroach upon matters reserved for other authorities. The doctrine of colorable legislation is aimed at upholding the supremacy of the constitution and maintaining the separation of powers.