Definition
Colour (also spelled color) is a term of art in common law pleading denoting an apparent or prima facie right — that is, a right that appears valid on its face but is in fact defective or subordinate to the pleader's claim. It does not mean the right is genuine; it means the opposing party's claim carries enough surface plausibility to require a formal answer rather than dismissal out of hand.
In classical common law pleading, colour arose most prominently in actions involving real property and title disputes. A defendant pleading colour would, in effect, concede that the opposing party possessed the appearance of a right while simultaneously asserting a superior or defeating title. The fiction of colour allowed the pleader to frame the dispute as a genuine legal contest over competing claims rather than an outright denial that the opponent had any colorable interest at all.
The term operates across two related but distinct contexts:
1. Colour in pleading: The formal pleading device by which a party acknowledges an apparent right in the adversary sufficient to give the action legal standing, while asserting facts that defeat it. This was a technical requirement in certain forms of common law pleading to prevent a plea from appearing as a mere naked denial.
2. Colour as a general legal concept (colour of right, colour of title, colour of law): A broader usage in which "colour" signals that something has the outward appearance or semblance of a legal basis — without necessarily possessing genuine legal validity. Colour of title, for example, denotes an instrument that appears to convey title but is legally deficient. Colour of law denotes the appearance of lawful authority without its substance.
Common Language
Modern common usage (Wiktionary): Commonwealth and Ireland standard spelling of "color" — referring to visual hue or shade, with no legal significance in ordinary use.
Historical common usage (Webster's 1913): Refers to the entry for "Color," covering visual appearance and figurative senses including pretense or semblance.
The gap between common and legal meaning is significant. In ordinary language, "colour" simply names the British spelling of "color" and carries no specialized sense. In law, the term is a term of art invoking a complex pleading doctrine — the idea of apparent right as distinct from actual right. A reader encountering "colour" in a legal pleading or treatise is dealing with a technical concept of semblance and prima facie validity, not a description of appearance in the visual sense.
Common Confusion
Colour, color of right, color of title, and color of law are related but not interchangeable. Colour in the pleading sense is the procedural device of acknowledging apparent right to frame a legal contest. Color of title refers specifically to a defective instrument that appears on its face to convey ownership — relevant in adverse possession and trespass actions. Color of law is a constitutional and civil rights concept (particularly under 42 U.S.C. § 1983 in American law) referring to the misuse of governmental authority. Researchers should not conflate the narrow pleading doctrine with these broader substantive uses.
Why It Matters in Research
Spelling is a navigational hazard. British and Commonwealth legal sources uniformly use "colour"; American sources use "color." Searching historical English, Irish, Canadian, or Australian materials without accounting for this variant will produce incomplete results. In the Law Mind corpus, pre-twentieth-century English pleading treatises and reports will index under "colour"; American digests and reporters under "color."
The pleading doctrine of colour belongs to an era of formal common law pleading that was largely abolished in England by the Common Law Procedure Acts of the mid-nineteenth century and supplanted in the United States by code pleading and, later, notice pleading under modern rules. A researcher encountering "colour" in a pre-reform pleading text is reading a doctrine that may have no direct procedural counterpart today, but whose conceptual legacy — the idea of apparent versus actual right — persists in substantive law (adverse possession, civil rights, criminal law defenses).
The broader concept of "colour of right" remains active in criminal law in several Commonwealth jurisdictions as a defense to theft and related offenses: a genuine but mistaken belief in a legal right to property can negate the mental element of the offense. This modern criminal law usage is conceptually descended from the old pleading doctrine but operates in an entirely different doctrinal context. Researchers moving between historical and modern materials must track which sense is operative.
Watch also for the overlap with equity. Chancery practice used "colour" differently from common law courts, and equity treatises may use the term in ways that do not map cleanly onto the common law pleading definition.
Historical Dictionary Support
Burrill's Law Dictionary gives the core definition with commendable economy: "An apparent or prima facie right." Burrill correctly identifies this as a pleading term and cross-references the Latin "color," where the fuller doctrine is typically elaborated in classical dictionaries. The brevity of the entry reflects the term's status as a known term of art requiring only a pointer rather than extended explanation for the trained reader.
Historical legal dictionaries broadly agree on the pleading sense. Where they vary is in depth of treatment of the broader "colour of" compounds. Older English dictionaries (particularly those oriented toward common law practice) give extensive treatment to "colour" as a pleading device; American dictionaries from the nineteenth century onward tend to consolidate treatment under "color" and shift emphasis toward "color of title" and "color of law" as the pleading doctrine fell into obsolescence.
What historical dictionaries characteristically miss is the persistence of "colour of right" as an active defense in Commonwealth criminal law — a development that postdates the classical pleading treatises and is not captured in the standard historical dictionary sources.
Jurisdictional Note
The spelling "colour" is standard in England, Canada, Australia, Ireland, and other Commonwealth jurisdictions; "color" is standard in the United States. The substantive doctrine is shared, but the criminal law defense of "colour of right" is more explicitly preserved and codified in Commonwealth criminal statutes than in most American jurisdictions, where analogous concepts operate under different terminology.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia — Pleading; Color of Title; Color of Law