Wedgwood Jasper : Color Chart
I have compiled the following table from images that have been collected from the Internet. The age of the colored piece in question, in addition to the various light present at the time that each photo was taken can affect the hues of the piece, hence multiple images have been included so one can form a true impression of a Jasper color.

The formula for Jasper has changed several times since it's creation, and as a result colors do vary depending on their age; the Pale Blue series of color samples illustrates this well.

Jasper type and date information is available for each color sample when the mouse cursor is posistioned and then held steady over an image.

(If you have further information or corrections, please contact me.)
BLACK Black Jasper dip with White bas-relief. Circa 1900. Black Jasper dip with White bas-relief. Circa 1930's. Black solid Jasper with Gold 'Egyptian' bas-relief decoration. Circa 1980's.
BLUE, PALE Pale Blue Jasper dip with White bas-relief. Circa 1930's. Pale Blue solid Jasper with White bas-relief and stippling. Circa 1980's. Pale Blue solid Jasper with White bas-relief. Circa 2000.
Second sample shows a stippled finish known as "orange peel", this decorative element is found on prestige pieces.
BLUE, COBALT Cobalt Blue Jasper dip with White bas-relief. Circa 1890's. Cobalt Blue Jasper dip with White bas-relief. Circa 1920's.
BLUE, MIDNIGHT Midnight Blue solid Jasper, no bas-releif features on these 'Interiors' collection pieces. Circa 2000.
BLUE, ROYAL Royal Blue solid Jasper with White bas-relief. Circa 1977. Royal Blue solid Jasper with White bas-relief. Circa 1975.
BLUE, PORTLAND Portland Blue solid Jasper with White bas-relief. Circa 1972. Portland Blue solid Jasper with White bas-relief. Circa 2000.
BROWN, CHOCOLATE Chocolate Brown Jasper dip with White bas-relief. Circa 1778. Modern Chocolate Brown Jasper dip with White bas-relief. Circa 2007.
CRIMSON Crimson Jasper dip with White bas-relief. Circa 1890's. Crimson Jasper dip with White bas-relief. Circa 1910. Crimson Jasper dip with White bas-relief. Circa 1930's.
Third sample showing characteristic Crimson color bleed into the bas-relief.
WINE Wine solid Jasper White bas-relief. Circa 2002. Wine solid Jasper, base showing 02 factory stamp. Circa 2002. Wine solid Jasper. Circa 2002.
Samples of inconsistent base stamps from 2002 Wine Jasper.
GREEN, SAGE Sage Green solid Jasper with White bas-relief. Circa 1955. Sage Green solid Jasper with White bas-relief. Circa 1980's. Sage Green Jasper dip with White bas-relief. Circa 1890's.
GREEN, EARLY SAGE Early Sage Green Jasper dip with White bas-relief and engine-turning. Circa 1780's. Early Sage Green Jasper dip with White bas-relief. Circa 1850's.
Sage pieces as pale in color as those shown above, are almost always from the 18th-century.
GREEN, OLIVE Olive Green Jasper dip with White bas-relief. Circa 1910. Olive Green Jasper deip with White bas-relief. Circa 1920's.
GREEN, TEAL Teal Green Jasper dip with White bas-relief. Circa 1930's. Teal Green solid Jasper with White bas-relief. Circa 1980's.
GREEN, SEA Sea Green solid Jasper with White bas-relief. Circa 1988.
GREEN, SPRUCE Spruce Green solid Jasper with White bas-relief. Circa 1997. Spruce Green solid Jasper with White bas-relief. Circa 1997.
GREY Grey solid Jasper with White bas-relief. Circa 1991.
LILAC Early Lilac Jasper dip with White bas-relief. Circa 1820's. Lilac Jasper dip with White bas-relief. Circa 1880's. Lilac solid Jasper with White bas-relief. Circa 1960's.
The palest Lilac jasper is from the 18th-century, it then became progressively deeper in color.
PINK Pink solid Jasper with White bas-relief. Circa 1980's. Pink solid Jasper with White bas-relief. Circa 1980's.
TAUPE Taupe solid Jasper with White bas-relief. Circa 1980's.
TAUPE, LIGHT Light Taupe solid Jasper with White bas-relief. Circa 2006.
TERRACOTTA Terracotta solid Jasper with White bas-relief. Circa 1959. Terracotta solid Jasper with Black 'Egyptian' bas-relief decoration. Circa 1979.
TURQUOISE Turquoise Jasper dip with White bas-relief. Circa 1880's. Turquoise Green solid Jasper with White bas-relief. Circa 2006. Turquoise Green solid Jasper with White bas-relief. Circa 2006.
YELLOW Early Yellow Jasper dip with White bas-relief. Circa 1820's. Early Yellow Jasper dip with Dark Blue bas-relief. Circa 1850's. Yellow Jasper dip with White bas-relief. Circa 1900.
Second sample is an c1850 Yellow Jasper dip item with unusual Dark Blue bas-relief. Together with the white body revealed by engine-turning, this creates a very striking and beautiful object.
YELLOW, BUFF Buff Yellow Jasper dip with Black bas-relief. Circa 1930's. Buff Yellow Jasper dip with Black bas-relief. Circa 1930's.
YELLOW, CANE Cane Yellow solid Jasper with Portland Blue trim. Circa 1998. Cane Yellow soild Jasper with Taupe bas-relief. Circa 1998.
The initial production of 1998 Cane Jasper mimicked early Cane Ware, and consisted of tea set with teapot, cup & saucer, honey pot, jam pot, bread and butter plate, and a sugar bowl. The pieces were trimmed with Portland Blue decoration and featured a 18th-century Bacchanalian design.
YELLOW, PRIMROSE Primrose Yellow solid Jasper with White 'Prunus Blossom' bas-relief decoration. Circa 1972. Primrose Yellow solid Jasper with White 'Australian Wildflowers' bas-relief decoration. Circa 2000. Primrose Yellow solid Jasper with Terracotta 'Egyptian' bas-relief decoration. Circa 1980's.
WHITE White solid Jasper with Pink 'Australian Wildflowers' bas-relief decoration. Circa 2000. White solid Jasper with Cane Yellow 'Australian Wildflowers' bas-relief decoration. Circa 2000. White solid Jasper with Pale Blue 'Australian Wildflowers' bas-relief decoration. Circa 2000.