Is the True Colors Personality Test Accurate?

When people ask whether a personality test is accurate, they usually mean “Did it describe me well?” Psychologists split that into two separate questions, and a test can pass one while failing the other.

A reliable test gives similar results when nothing about you has changed. The most direct check is test–retest reliability: the same people take the test twice, a few weeks apart, and researchers measure how closely the scores match. If you come out Gold on Monday and Green two weeks later with no big change in your life, the wobble is in the test, not in you.

A second check, internal consistency, asks whether the questions meant to measure the same thing agree with one another. It’s useful, but a test can do well on it and still give different answers from one week to the next, so it doesn’t replace retest data.

The chart shows why close calls are fragile. Person A changed two answers and stayed Blue, because Blue led by a wide margin. Person B changed a single answer, and Gold and Green traded places. Neither of them changed as a person. Person B’s result was a near-tie from the start.

Validity asks whether the scores mean what the test says they mean. Do people who score high on Gold actually plan ahead more, by their coworkers’ account or their own calendars? Do the scores line up with established measures of similar traits? And for any test used in decisions, do they predict something real, like job performance?

Picture a bathroom scale that always reads five pounds light. It’s perfectly reliable: step on it ten times and you get the same number. It’s still wrong. A personality test can work the same way, giving you a consistent, tidy answer while measuring something narrower than it promises, such as how you like to describe yourself on a good day.

Most personality traits work like height. People aren’t simply tall or short; they spread along a scale, with most of them bunched near the middle and fewer at the extremes. A type test takes that scale, draws a line through it, and gives everyone on one side the same label.

The chart below shows what that line does. Sam and Jo answer almost the same way, six points apart, yet they get different colors. Jo and Alex sit 35 points apart and share a color. The label throws away the most useful fact: how strong the preference is.

On a bell-shaped trait, the cutoff falls right where the crowd is, so a large share of people sit close to the line. Every test also has some noise: your mood that day, how you read a question, whether you pictured work or home. Far from the line, that noise changes nothing. Near it, a couple of answers can change the label. That’s why many people get a different type on a retake, and why a surprising result is often a close call rather than a mistake.

Academic personality research mostly uses trait models. The best known is the Big Five: openness, conscientiousness, extraversion, agreeableness and neuroticism (the opposite of emotional stability). Each trait is reported as a score on a continuous scale, often as a percentile compared with other people. You’re not “an extravert” in a yes-or-no sense; you might sit at the 70th percentile. Keeping that detail makes scores steadier across retakes and easier to check against real behavior.

Types do have one real advantage: people remember them. “I’m pretty Gold about deadlines” is a sentence a team can work with. The fix is to treat a type as a rounded-off version of a continuous reality, which is why our test reports a percentage for every color instead of a single verdict.

In 1949, psychologist Bertram Forer gave his students a personality test, then handed each of them a “personal” description to rate from 0 (poor) to 5 (excellent). The average rating was 4.26. Every student had received the same description, built largely from statements taken from a newsstand astrology book. Forer called it the fallacy of personal validation. Today it’s usually called the Barnum effect, a name psychologist Paul Meehl later gave it.

Generic descriptions feel personal for a few predictable reasons:

This matters for color tests in a specific way: a well-written profile of your color will feel accurate even if the test put you in the wrong color. Feeling seen is not evidence that a test works. A better check is whether your description fits you better than the other three do. Read all four profiles, Orange, Gold, Green and Blue. If yours clearly stands out, that’s a real signal. If each one sounds a bit like you, hold your result loosely.

True Colors was created by Don Lowry in the late 1970s and is built on David Keirsey’s temperament theory, which groups the sixteen Myers-Briggs types into four temperaments. The colors map onto them: Orange to Keirsey’s Artisan, Gold to Guardian, Green to Rational and Blue to Idealist. Our guides to the Keirsey temperaments and what True Colors is cover that history.

Independent, peer-reviewed research on True Colors specifically is thin. True Colors International publishes a summary from an outside assessment reviewer reporting strong internal consistency in a large sample, which is a reasonable first check but only one kind of reliability. We could not find published test–retest data or independent journal studies showing that True Colors results predict job performance, team outcomes or anything else outside the workshop. The academic work we found is small: a graduate thesis at Colorado State University compared True Colors with other instruments in 56 graduate students and found it lined up with the MBTI but showed little agreement with two career-interest inventories.

Most free color quizzes online, ours included, have no published research at all. None of this proves the four colors are wrong. It means “scientifically validated” hasn’t been earned in the way psychologists normally require, and “popular, intuitive and lightly tested” is the fair summary. Our guide to color personality models compares the other systems.

Because the four colors come from the same family as the Myers-Briggs Type Indicator, MBTI research is the nearest evidence available, and there is far more of it. Two criticisms keep coming up. Many people get a different four-letter type when they retake it, usually because they scored near the middle of a scale. And the underlying scores don’t split into two clean groups the way the types suggest; most people land near the center. In a widely cited 1989 paper, Robert McCrae and Paul Costa showed that four MBTI scales line up with four of the Big Five traits and argued that the results make more sense as continuous scores than as types.

The MBTI’s own publisher says it should not be used for hiring or selection. If that’s the guidance for the most-studied type test, it applies at least as strongly to a four-color quiz.

The Big Five is the most heavily studied model in personality psychology. Good Big Five questionnaires give similar scores on a retake, traits stay fairly stable through adulthood while shifting gradually with age, and self-ratings agree reasonably well with ratings from friends and family. The traits also predict real outcomes, modestly. A well-known 1991 meta-analysis by Murray Barrick and Michael Mount found conscientiousness related to job performance across many kinds of jobs. Even so, the best personality measure explains only a slice of what any one person does.

No. In True Colors-style tests the colors are memorable labels for temperaments, and the questions never ask about color preferences. Color psychology is a separate field, and there’s no solid evidence that your favorite color reveals your personality. Our page on what personality colors mean explains the symbolism behind each label.

The more useful question isn’t “Is it accurate?” but “Accurate enough for what?” A color result can be fine for a 20-minute team discussion and completely wrong for deciding who gets a job. Two things decide which side of the line a use falls on: how much rides on the result, and who gets to draw conclusions from it.

One classroom use deserves a special warning: matching teaching methods to a student’s color or “learning style.” A 2008 review by Harold Pashler and colleagues found little evidence that tailoring instruction to learning styles improves learning. Colors can help a class talk about differences; they shouldn’t decide how a child is taught. Our guide to using True Colors with students covers classroom uses that hold up.

We can’t call our test validated. We haven’t published reliability or validity studies, and no one else has studied it. What we can do is design around the weak spots described above and be upfront about the rest.