About & scoring

Three short color games from Any1Tan: remember a color, match a visible one, or repeat a growing sequence.

How points work

Guess and Match compare colors in OKLab, a perceptual color space. The score is 100 × exp(−4.5 × distance), rounded to a whole number. An identical color gets 100. Five rounds can earn 500. This is a game score, not a measurement of your eyesight.

Easy tests hue with fixed saturation and lightness. Classic varies all three. Best scores are kept separately by game and difficulty. Memory counts completed sequence lengths.

Play your way

Drag around the ring to choose hue. In Classic, drag inside the square to choose saturation and lightness. You can also focus the ring and use the arrow keys, or open Keyboard controls for labeled sliders. Memory uses keys 1–4 or numbered buttons.

Sound starts off and can be toggled. If you switch tabs during a color preview or sequence playback, the game pauses. Resume starts that observation again.

Screen settings affect colors. These games rely on color perception and are not suitable for diagnosing color vision.

Contact hello@any1tan.com.

Daily and friend challenges

Guess and Match share five-color sets through versioned links. The game and difficulty are included, so friends play the same targets. Your shared text shows accuracy symbols and scores, not the target colors. Sharing is optional and never required to retry.

A daily set uses a UTC date, fixed when the run starts. The first attempt is stored on this device when you begin. Leaving part-way means later attempts are practice. A completed first score is never replaced by a better practice score. Old daily links are practice. Scores are local and can be cleared or changed; this is not a verified leaderboard.