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Colors

Colors. Color of HTML Elements. You can control the color of the following elements: All text within the body of a page Background of a page Background of a table Each row of a table Each cell of a table. Examples. To set Page background color to black and

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Colors

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  1. Colors

  2. Color of HTML Elements • You can control the color of the following elements: • All text within the body of a page • Background of a page • Background of a table • Each row of a table • Each cell of a table

  3. Examples • To set • Page background color to black and • text color to white. <body bgcolor=“white” text=“black"> • To set • Particular text to blue <font color=“red">This part of the sentence is shown in red</font>, while the rest is in the default color.

  4. How To Specify Color • Color may be specified • in English notation with predefined color names(for 16 colors), or • in a format known as the Hexadecimal notation

  5. Specifying Colors in Hex Notation • Using hexadecimal notation, it is possible to specify over 2 million shades • #FF0000--red • #00FF00--green • #0000FF--blue • #FFFF00—yellow • Other examples • To set some text to “brown” color: <font color=“#FF8429”>some text</font>

  6. Decimal Notation • In Decimal System • Ten symbols are usedto express any number-- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. • Each position implies a power of 10 • E.g.(Decimal) number 3234 means (3 x 103) + (2 x 102) + (3 x 101) + (4 x 100)= 3000 + 200 + 30 + 4= 3234

  7. Hexadecimal Notation • In Hexadecimal System • 16 symbols are used--0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F. • Each position implies a power of 16 • E.g.,(Hexadecimal) number 5F means(5 x 161) + (15 x 160)= (5 x 16) + (15 x 1)= 80 + 15 = 95 (decimal)

  8. RGB Values • #rrggbb-- e.g., #FFFF00 • rr -- These 2 digits indicate intensity of red • gg --These 2 digits indicate intensity of green • bb -- These 2 digits indicate intensity of blue • For example, • #FF0000--red • #00FF00--green • #0000FF--blue • #FFFF00—yellow • Other examples

  9. Your Turn • Given a hex number: A5 • What is its decimal equivalence? • Given a hex number: 120 • What is its decimal equivalence? • Given a decimal number: 21 • What is its decimal equivalence? • Given a decimal number: 256 • What is its decimal equivalence?

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