I fail it comprehensively but pass the Lantern Test 100%, with and without glasses.
And I can spell out every colour you stick under my nose.
I am exactly the same, the fire service allows only 2/16 discrepancies with the ishiara test - of which i couldnt identify 6 of them. The lantern test i believe to have got 100% also or there abouts.
and i too can name every colour under the rainbow - so frustrating though trying to explain it to the ignorant who believe i see the world in varying shades of grey!