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About this tool
Test your color perception by matching the target color from a grid of similar shades. How good is your eye?
The Color Match Game is a ten-round perception test: each round shows a target swatch and four candidate colours, and you pick the one that matches it exactly. The distractors are filtered by Euclidean distance in RGB space, and that minimum distance shrinks as the rounds go on — so by round ten the wrong answers sit much closer to the target than they did at the start. A correct pick scores 10 points plus 2 for each answer in your current run, so an unbroken streak is worth far more than ten lucky guesses.
Open Color Match Game on AltFTool — it loads instantly in your browser.
Add your input to the workspace.
Adjust the options until the result looks right.
Copy or download the output and put it to work.
Distractors must clear a minimum RGB distance from the target, and that threshold falls with each round, so the shades genuinely converge.
Each correct answer pays 10 plus twice your current streak, so a clean run scores 190 while the same ten correct answers scattered among mistakes score far less.
A wrong pick outlines your choice in red and the true target in green, so you can see exactly which pair fooled you.
Ten, with four colour options in each. After the tenth round you get a final score and your best streak, and you can restart immediately.
10 points for a correct answer plus 2 for every consecutive correct answer already banked, so the first is worth 10 and the tenth in an unbroken run is worth 28. A perfect game totals 190; one wrong answer resets the streak bonus to zero.
Yes. A candidate colour is only allowed as a distractor if its straight-line distance from the target in RGB space clears a threshold, and that threshold drops from roughly 86 in the first round to about 50 in the last, so late-round decoys are visibly nearer the target.
No. It measures how well you tell apart specific colour pairs in one session and is meant as a game, not a screening tool. Genuine colour vision testing uses standardised plates or an arrangement test administered by an optometrist.