Life & fun · alternatives · 2026

24 alternatives to What's my JND? – a colour guessing game

https://www.keithcirkel.co.uk/too-much-color/

What's my JND? is a color guessing game that challenges players to identify subtle differences between similar colors. The game is designed for anyone interested in testing their color perception abilities. It focuses… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1
Hex Guess▲71
Test your hex color guessing skills ✨
2019 · hex-guess.glitch.me · its alternatives →
2
KOLOR▲74
Try to guess the color as fast as possible!
2016 · kolor.moro.es · its alternatives →
3DY
Do you know RGB?▲92
20 questions to test your RGB knowledge. How far can you go?
2025 · maxwellito.github.io · its alternatives →
4AL
A little web app for playing around with colors▲106
2019 · color.clss.hk · its alternatives →
5ML
My <canvas>-based, Photoshop-esque JavaScript color picker▲73
2010 · zetamac.com · its alternatives →
6
How good is your color vision? Find out in my new game▲31
Spot the square with a different color in this game to challenge your color perception.
2025 · vidzert.com · its alternatives →
7
Guessly▲96
A daily mini guessing game that roasts you when you fail
Jan 2026 · guessly.me · its alternatives →
8
Colorist▲89
Train your sense of color
2020 · play.google.com · its alternatives →
9
RGB challenge▲64
Game for designers: guess the right RGB color
2015 · rgbchallenge.com · its alternatives →
10
Color Match▲93
Simple color memory game.
2015 · colormatch.co · its alternatives →
11
Colorfle – A daily color mixing game inspired by Wordle▲96
Hi HN, I was inspired by Wordle to make Colorfle, a different take on the genre where the goal is to mix colors together to match the target color within six tries. There were some interesting problems to tackle in making this game, one of them being the difference between mixing digital colors and real-life behavior (in RGB, blue + yellow = grey!). I hope you enjoy it -- any feedback would be much appreciated!
2022 · colorfle.com · its alternatives →
12
a color game playable by color blind players too▲45
A color matching game
2012 · color.method.ac · its alternatives →
13
Colors: A reaction and speed game▲67
Tap a correct ball on the right moment and chain them to win
2015 · apps.apple.com · its alternatives →
14
Color▲80
A color matching game
2015 · color.method.ac · its alternatives →
15
Specimen: A Game About Color▲78
A game about color perception
2015 · apps.apple.com · its alternatives →
16
haRdGB▲71
The hardest RGB trivia game ever.
2020 · apps.apple.com · its alternatives →
17
Be My Guess Standup Game▲114
Turn your standups into standouts with our free new game
2023 · its alternatives →
18
Hued▲102
Like Wordle, but for colors. Match today's color in 3 tries.
2025 · playhued.com · its alternatives →
19
The Emoji Game▲108
Can you guess what 🎥, 📺, 📕 or 🎵 lay behind these emojis?
2017 · workvalues.io · its alternatives →
20
Eight Colors▲76
Simple, yet challenging, block shifting game
2022 · eightcolors.net · its alternatives →
21
Color Tap▲82
A mobile color matching game
2015 · its alternatives →
22
Colorific▲85
A color accessibility tool for contrast and color blindness
2020 · its alternatives →
23
Color Sense▲5
Color sense is a game that will test your color sensitivity.
2020 · play.google.com · its alternatives →
24
Pictioner▲82
Test your wits against GPT-4 in a fun art guessing game
2023 · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →