We're terrible at identifying colours, because colour is context dependent. Which makes it easy to create colour illusions like these: http://brainden.com/colo

We're terrible at identifying colours, because colour is context dependent. Which makes it easy to create colour illusions like these: http://brainden.com/color-illusions.htm http://brainden.com/color-illusions.htm We don't have an absolute colour sense except under controlled conditions. No-compromise colour professionals - high-end graphic designers, commercial photographers, photo libraries, printers and such - minimise contextual distortions with highly accurate colour-calibrated monitors set up in an environment with controlled ambient lighting and a neutral (usually grey) wall colour.