It looks alright to me…

Ishihara Tests

Perhaps it does, but is it right?

How is your colour perception? How is your hue discrimination? Are you colour blind?

You won’t really know unless you are tested regularly using such equipment as the Ishihara Tests and the Farnsworth Munsell 100 Hue Test etc.

Get this right and you stand a good chance of if it looks right, then it actually is right!