Puzzle Solvers

Which Solver Should You Use?

The Colordle solver is for the daily color guessing game where you type a color name and get back a similarity percentage. If your score is 85% on "teal" and you have no idea what the target could be, the Colordle solver will show you every named color that would produce that same 85% score. It works by inverting the Delta E CIE2000 calculation, which is the same perceptual distance formula Colordle itself uses. When you add two or three guesses, the candidate list usually drops below ten colors, and often to just one or two. At that point, solving the puzzle is straightforward: pick the most likely candidate, verify it in the game, and you are done.

The Colorfle solver is for the daily color mixing puzzle where you see a target color and need to find the three source colors that produce it. It has two distinct modes of operation. Hex-solving takes a target hex code and finds the five closest three-color combinations from the twenty-color palette. This mode is ideal for your first guess, when you have no prior information beyond the target color itself. Feedback-solving lets you use a suggestion as an actual guess, mark green, yellow, or gray on each color swatch, and eliminate every combination that contradicts your feedback. After two refinement cycles, you are usually looking at one or two remaining combinations, which makes your final guess a confident one.

Both solvers run entirely in your browser. No data leaves your device at any point. The calculations happen locally using the exact same algorithms the games use, so the results are accurate to the games' own scoring systems. The solvers do not store state between sessions, meaning that refreshing the page resets everything. If you want to save your progress mid-solve, take a screenshot of the candidate list before navigating away. There is no account system and no server-side storage by design, because privacy is a core principle of this project.

If you are unsure which solver you need, look at the game you are playing. If the game asks you to type a color name and gives you a percentage, use the Colordle solver. If the game shows you a target color and asks you to pick three source colors from a palette, use the Colorfle solver. The two games are fundamentally different in structure, and the solvers are tailored to match those structures precisely.

When Solvers Beat Guessing (And When They Don't)

Solvers shine when you have partial information. If you have made one or two guesses in Colordle and the percentage is above 70%, the solver will usually identify the answer in a single filter step. Below 50%, the solver still helps by narrowing the hue family, but you will need more guesses to pinpoint the exact color. The sweet spot is entering two guesses from different color families. For example, if you get 40% on "blue" and 25% on "red," the solver can triangulate the approximate region of the color wheel where the target must lie. Each additional guess refines that region further, and after three guesses you are typically looking at a manageable list of candidates.

For Colorfle, the solver is most useful after your first guess. Enter the target hex, get five suggestions, pick one as your guess in the actual game, then mark the feedback you receive. One round of refinement typically eliminates 80% of possible combinations. Two rounds gets you to the answer in most cases. Without the solver, you are guessing from over a thousand possible three-color permutations, which is why most people run out of guesses before finding the right combination. The combinatorial space is simply too large for unaided intuition to navigate reliably within six guesses.

The one scenario where solvers are less helpful is when you have zero information and have not started the game yet. If you have not made a single guess, the solver gives you the full list of candidates, which is just the entire color palette. That does not narrow anything. Make at least one guess first, then come to the solver. That first guess gives you the percentage or feedback you need to start filtering effectively. The solver amplifies the information you already have; it does not generate new information from nothing.

There is also a psychological benefit to using the solver that is worth mentioning. When you are stuck at 95% in Colordle and have been guessing randomly for ten minutes, frustration builds quickly. That frustration makes you guess less carefully, which compounds the problem. The solver breaks that cycle by giving you a structured, logical path forward. Instead of guessing "maybe it's lavender?" for the fifth time, you see a filtered list of candidates and can make an informed choice. The solver does not just help you solve the puzzle; it helps you solve it calmly and methodically.

The Math Behind the Solvers

The Colordle solver uses Delta E CIE2000, which calculates perceptual color distance in CIELAB color space. LAB space was designed to be perceptually uniform, meaning that a Delta E of 5 looks like the same visual gap whether you are comparing two reds, two blues, or two greens. This is a significant improvement over RGB-based distance calculations, which are notoriously non-uniform. In RGB space, a numerical difference of 10 units between two reds might be invisible to the eye, while the same numerical difference between two dark greens might be immediately obvious. LAB space fixes this problem by representing colors in terms of lightness (L), green-red opposition (a), and blue-yellow opposition (b), all of which are scaled to match human perception.

The percentage Colordle shows is derived from this Delta E value using the formula: percentage = max(0, 100 - DeltaE). So a score of 85% means the Delta E between your guess and the target is approximately 15. The solver inverts this formula to find all colors that would produce a given percentage against a given guess. The inversion is not exact because Delta E CIE2000 is not analytically invertible, so the solver computes the Delta E between your guess and every color in the database, then filters to show only those within a tight tolerance of the percentage you entered. The tolerance is set to 0.02 percentage points to account for rounding in the game's display.

The Colorfle solver uses weighted RGB channel averaging across both YCC and RGB color spaces, then averages the two results. YCC (luminance-chrominance) space preserves hue relationships better than RGB, which tends to produce muddy desaturated midtones when colors are averaged. By averaging both spaces, Colorfle achieves results that feel intuitive to the human eye. The solver mirrors this dual-space mixing model exactly, so the colors it suggests will mix to produce the same target you see in the game. The weights are fixed at 50%, 34%, and 16% for the three color positions in Mode 0, which is the standard game mode.

Both solvers are deterministic. Given the same inputs, they always produce the same outputs. There is no randomness, no machine learning, and no approximation involved. The results are mathematically exact within floating-point precision limits. This determinism is important because it means the solver's results are reproducible and verifiable. If you enter the same guess and percentage twice, you get the same candidate list both times. This reliability is what makes the solver trustworthy as a solving tool.

Frequently Asked Questions About the Solvers

Do the solvers work on mobile? Yes. Both solvers are fully responsive and work on phones and tablets. The Colorfle solver's color picker is particularly useful on touch devices, because you can tap the target color directly instead of typing a hex code. The Colordle solver's dropdown search also works well with mobile keyboards, allowing you to type partial color names and tap to select from the filtered list.

Why does the solver sometimes show zero results? This usually happens when the percentage you entered does not correspond to any color in the database within the solver's tolerance range. Double-check that you selected the correct color name from the dropdown and that you typed the percentage exactly as shown in the game. A common mistake is confusing similar color names, like "Navy" and "Navy Blue," which are different entries in the database with different hex values and therefore different Delta E distances to the target.

Can I use the solver while the game is open? Absolutely. Open the game in one browser tab and the solver in another. Make a guess in the game, note the percentage, switch to the solver tab, enter the guess and percentage, filter, then switch back. This workflow is how most people use the solver, and it works seamlessly on both desktop and mobile. On mobile, you can also use split-screen mode to see both the game and the solver simultaneously.