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Color Lab
The sign shop is open. Its paintbrushes have been replaced by light.
Predict. Mix. Make it readable.
Six experiments with labeled light channels, neutral grays and sign lettering. Hints and retries are free. Color names and numbers accompany every result.
This is a screen-light model, not a paint recipe or real lighting measurement. No special equipment is needed. Practice does not award grades or coins.
Experiment paused
Observation board
| Setting | Prediction | Observed result |
|---|
Your color discoveries
Fun fact: Three on/off light channels give eight combinations. Equal channel values can also make a whole range of neutral grays.
Watch Light and Pigment · Print light-mixing practice · Compare color, shape and lightness
Model references
Adobe: color modes · W3C: contrast minimum
Contrast is calculated from sRGB relative luminance. Our target is 4.5:1 for normal text. Other text sizes and contexts have different requirements; this activity is not a full accessibility audit. Screens and viewing conditions vary.