Liquor chromaticity parameters of 29 green tea, 20 Oolong tea and 15 black tea samples were investigated. The results showed that the chromaticity parameters were significantly different between various kinds of tea and correlated to the organoleptic quality of tea. The L value, an indicator of light and dark, was significantly correlated to the scores of liquor color, taste and total organoleptic quality of green tea and Oolong tea. The redness-greenness indicator a and the yellowness-blueness indicator b ...