Color Blindness Check
Around one man in twelve cannot separate red from green the way the rest of us do. Put your palette in and see which of your colors stop being distinguishable.
The palette
One per line, with an optional label after it.
Settings
Warn when two colors come within
Measured in OKLab, where about 10 is the point most people stop seeing two colors as different.
How it looks to others
Pairs that stop being telling apart
Add at least two colors.
Where two colors collide, lean on something other than hue: a shape, a label, a pattern, or a bigger step in lightness.
Try it on a picture
Drop an image here, or click to pick one