Color matching game: can you see past the backgrounds?
Two circles. Two backgrounds. Make the right color match the left. Color Context is a free color matching game where the backgrounds can lead your eyes astray.
The target stays in view. Slide along the strip, from dark to light, until the right circle looks the same as the left, then lock in your color. The backgrounds then slide away so you can compare the two colors side by side. Each game opens with plain backgrounds, mixes three different patterns from gradients, stripes, rings, spotlights and checkerboard tiles, then ends with a ring-and-pattern combination. Play five rounds for up to 500 points, then start a fresh mix.
How to play Color Context
- Compare the circles. The left circle is your reference. The right circle is the one you change.
- Adjust the brightness. Move the bottom slider left for darker or right for lighter. Hue and saturation stay fixed.
- Lock in your match. Press the round check button when the two colors look the same.
- See what the backgrounds were hiding. The backgrounds slide away and the circles meet on plain white. Your score shows how close you came, and the verdict tells you whether your final color was lighter or darker.
Use a mouse or one finger to move the slider. On a keyboard, Left and Right make small adjustments, Home and End reach the ends, and Enter confirms. There is no timer.
Scoring: closer colors earn more points
Each round is worth up to 100 points. An exact match earns 100. Other matches are scored by perceptual color distance in Oklab: smaller differences earn more points, while large differences can earn zero. The five round scores add up to a maximum of 500.
The score compares the circle colors themselves. The backgrounds do not change the answer, and the slider gives no live hot-or-cold feedback.
Why the reveal can surprise you
A color's surroundings affect how it looks. The same color can appear different against two backgrounds, and different colors can appear similar. The Exploratorium's Color Contrast exhibit demonstrates this effect.
Here, the backgrounds stay separate while you make your choice. After you confirm, they move aside and the circles meet. That shared edge makes the remaining difference easier to judge.
The stripes round is the strangest. A color sitting in the dark stripes looks lighter, even though light stripes cross right through it. Psychologists call this White's illusion. The ring round sets the nearest edge against the rest: a dark ring on a light background can still make the circle inside look lighter.
Other rounds change the setting again: each circle stands in its own stage-light cone, while checkerboard tiles surround them with alternating colors. The finale pairs one of these patterns with a ring. The circle colors stay unchanged when those backgrounds slide away.
About half the games also hide a trap: one round where the two circles already match. If the backgrounds talk you into moving the slider, you lose points you already had.
A few ways to steady your hunch
Look back and forth between the circles, rather than judging each circle against its own background. Make a broad adjustment first, then use small movements near your match. The keyboard arrows are useful for those last small steps.
After the reveal, notice whether your color was lighter or darker. You get one confirmed choice per round, so use that result as a clue for your next color.
Questions about Color Context
Is this a color memory game?
The reference stays visible throughout the round. This game tests matching colors across different backgrounds. For a memory challenge, try Color Recall, where the original color disappears before you rebuild it.
What does the slider change?
Only the lightness of the right circle. Its hue and saturation already match the reference, so you can focus on a single adjustment.
Why do the circles look different after I confirm?
Both colors are unchanged. Removing their separate backgrounds and joining them on plain white gives you a different view of the same two colors.
Can I play again?
Yes. Play again starts five fresh colors with a new mix of patterns and a different combination to finish. There is no time limit, account or download.
Is there always a trap round?
No. About half the games have one, in any round after the first. So leaving the slider where it starts is never a safe habit.
Can I challenge a friend?
After five rounds, Share copies your score, five spoiler-free squares and a link. Your friend gets the same five colors and backgrounds, with your score to beat. On supported phones it opens the share sheet instead.
Is there a daily puzzle?
Yes. Everyone gets the same five colors and backgrounds each day, new at local midnight, with a streak if you come back. Ordinary play stays unlimited, with a fresh set every game.
More games for your eye
Draw a country from memory in Border Recall, or rebuild a color from memory in Color Recall.