Blue is a colour, the perception of which is evoked by light having a spectrum dominated by energy with a wavelength of roughly 450–490 nm. It is considered one of the additive primary colours. On the HSV Colour Wheel, the complement of blue is yellow; that is, a colour corresponding to an equal mixture of red and green light. On a colour wheel based on traditional colour theory (RYB) where blue was considered a primary colour, its complementary colour is considered to be orange (based on the Munsell colour wheel).

In Modern English, "blue" is one of the basic colour terms, and one of the seven spectral colours, intermediate between violet (purple) and cyan. It comprises a considerable number of identifiable subcategories that can be identified with descriptive terms like navy blue (a dark blue), cyan blue (or "blue-green", on the boundary to the green range), or sky blue (azure).

The word itself was loaned into Middle English from the Old French word bleu, blo "pale, pallid, discoloured; blue, blue-grey", itself from an Old Frankish *blao.

A wig is a head of hair made from horsehair, human hair, wool, feathers, yak hair, buffalo hair, or synthetic materials which is worn on the head for fashion or various other aesthetic and stylistic reasons, including cultural and religious observance. The word wig is short for periwig and first appeared in the English language around 1675.

Some people wear wigs to disguise the fact that they are bald; a wig may be used as a less intrusive and less expensive alternative to therapies for restoring hair. Wigs may also be used as a cosmetic accessory, sometimes in a religious context. Actors often wear costume wigs in order to better portray a character.

The ancient Egyptians wore wigs to shield their shaved, hairless heads from the sun. They also wore the wigs on top of their hair using beeswax and resin to keep the wigs in place. Other ancient cultures, including the Assyrians,Phoenicians, Greeks and Romans, also used wigs. Wigs are principally a Western form of dress—in the Far East they have rarely been used except in the traditional theatre of China and Japan. Some East Asian entertainers (Japanese Geisha, Korean Kisaeng) wore wigs (Katsura and gache respectively) as part of their traditional costumes.

Simon is a common name, from Hebrew meaning "He who has heard/hears [the word of God]".

Simon may also refer to: