A LITTLE GUIDE TO A LITTLE GAME
A shade worth remembering.
See it. Lose it. Bring it back. HueFlash asks one simple question: how much of a color stays with you after it disappears?
How the color memory game works
- Take in the color. Classic mode shows you a shade for three seconds. Flash mode gives you just one. There are no color values to memorize.
- Let it disappear. A short neutral screen separates the original from your color picker. The reference stays hidden while you mix.
- Recreate your memory. Move the hue, saturation and lightness sliders. There is no time limit for this part.
- Lock it in. Tap “That’s my color” to reveal the original beside your guess and see your score.
- Finish the five. Your final score is the average of all five rounds, out of 100. Your palette puts each original above your remembered shade.
Make friends with the three sliders
Hue chooses the color family: red, orange, yellow, green, blue and the shades between them. Start here. Saturation changes a color from muted and grayish to rich and vivid. Lightness moves it from dark to light. The slider backgrounds update as you mix, so you can see where each adjustment will take you.
On a keyboard, focus a slider with Tab and use the arrow keys for small steps. Home and End move to the limits. Tab to the confirmation button and press Enter to submit.
Three ways to play
| Mode | What you get |
|---|---|
| Quick play | A fresh set of five colors. Choose Classic or the one-second Flash challenge. Play as often as you like. |
| The daily five | The same five Classic-mode colors for every player, with a new set at midnight UTC. Your first completed run is saved on this browser. |
| Friend challenge | Create a shared room and invite friends. The host starts once someone joins. Play the same five colors at your own pace and compare the shared leaderboard. |
A few things to notice
Instead of remembering only “blue,” notice whether it feels closer to green or purple. Ask whether it is dusty or vivid, airy or deep. A simple personal association can help you hold onto that impression while the original is gone.
The reveal is useful feedback. If you keep choosing lighter shades, pay extra attention to darkness on your next run. HueFlash is a game for exploring your own impressions; it does not measure an IQ, diagnose vision or promise to improve memory.
How the score works
The original and your guess are converted from screen colors into CIELAB. HueFlash then calculates their difference with the CIEDE2000 formula. A smaller difference earns more points. A perfect match earns 100; a difference of 60 or more earns zero. Between them, the score falls in a straight line.
The final score is the average of your five round scores. It is a game score, rather than a percentage of your memory or a ranking against other players. A score of 82 does not mean you beat 82% of people. Different screens and viewing conditions can change how a shade looks.
Questions, in a few shades
Is HueFlash free? Do I need an account?
It is free to play in a browser, with no download or account. Your progress and stats stay in this browser.
Can I play the daily more than once?
Your first completed daily is the saved result on this browser. Reopening the daily shows your palette. If you leave between rounds, your submitted guesses are saved so you can continue. Quick play is always available for more practice.
Are friend challenges live?
Create a room, share its link and wait for a friend to join. The host starts the challenge. Everyone then plays the same colors and memory window at their own pace. The room refreshes the shared leaderboard about every four seconds while it is open. There is no shared per-round timer.
How long does a challenge last?
A room works for 24 hours after it is created. Its nicknames, submitted picks and scores are saved in the game database so everyone can return to the shared result. Expired rooms become unavailable and are removed by cleanup. A rematch starts a new room with fresh colors.
Will sharing the daily spoil the colors?
The daily text result uses score blocks instead of the target colors. Its downloadable score card also keeps the targets hidden. A screenshot of your on-screen palette would reveal them, so use the share or save buttons when you want to avoid spoilers.
Why did my game pause?
If you switch tabs while a color is on screen, HueFlash hides it and pauses that round. Tap the resume button when you return to see it again for its full memory window.