Complementary colors live on opposite sides of the color wheel. Imagine red and green, blue and orange, or yellow and purple. Or move a half step over on the wheel, and combine a yellow-green color ...

You can use a prism to split (or disperse) white light into a spectrum of colours: red, orange, yellow, green, blue, indigo and violet. Dispersed means that the colours are separated out.

The eight remaining approved dyes include Blue No. 1, Blue No. 2, Green No. 3, Orange B, Red 40, Yellow 5, Yellow 6 and Citrus Red − all used to give food, drinks and ingested drugs bright colors.

Both rubies and emeralds are minerals, which is a type of rock with a consistent chemical composition and a highly ordered ...

Blue No. 2, Green No. 3, Orange B, Red 40, Yellow 5, Yellow 6, and Citrus Red. On Wednesday, Newsweek published a list of some of the foods and drinks that contain Red No. 3. It includes ...