Peripheral Color Task

Targets appear in your peripheral vision. Click them as quickly as you can, in the color that appears. Between trials, keep your eyes on the + at the screen center.

What this measures

Red-green (L-M) cone opponency collapses in the periphery; blue-yellow (S-cone) opponency persists. Cyan sits near the photopic luminance peak and engages the S-cone pathway. So — in theory — a cyan target at 20° eccentricity should be easier to detect than a red one.

Your reaction times (stimulus onset → mousedown), click accuracy, and ClickSense motor dynamics (approach trajectory + hold duration) will be compared across target color × eccentricity. You'll see your own results at the end.

The trial

1. Look at the pulsing + in the center. Move your cursor there.
2. Click the + to start the trial.
3. A colored target appears somewhere on-screen. Click it.
4. Keep looking at the center until you click the target.

27 trials. About 3 minutes. No breaks.

Data

Each click is sent anonymously to PostHog as a peripheral_click event for the research dataset. Trial conditions (target color, eccentricity, hemifield, reaction time, click error) are attached. No identifiable information is captured.

Start

Part of ClickSense. Background: Peripheral Color — What Designers Don't Know About Red.