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HTML & CSS
Colors
БОЯН ИВАНОВ
Color Wheel –
Цветно Колело
2
Цветове в CSS
Най – често използваните начини за дефиниране на
цветове в CSS, биват :
 Валидно име за цвят на английски език, примерно
“red” за червено, “blue” за синьо и тнт.
 Стойността в RGB (red, green, blue), примерно
“rgb(255, 0, 0);” за червено.
 Шестнадесетичната стойност на цвета (HEX), като
#FF0000 за червено, #0000FF за синьо и тнт.
3
Цветове в CSS
Още начини за дефиниране на цветове.
 RGBA, RGB стойност с прозрачност, примерно
“rgba(255, 0, 0, 0.5)”, за 50% прозрачност.
 HSL(Hue (Отенък), Saturation (наситеност),
Lightness (светлина)), примерно “hsl(0, 100, 50)” за
наситено червено.
 HSLA, по същия принцип като rgba, hsl модела с
ниво на прозрачност, примерно “hslа(0,
100, 50, 0.5 )”, за 50% прозрачност.
4
Стойности на RGB
 Red : 0 – 255 / 00 – FF;
 Green: 0 – 255/ 00 - FF;
 Blue: 0 – 255 / 00 – FF;
 Total: 256*256*256 = 16777216 colors;
 Opacity : 0 – 1;
rgba(255, 0, 0, 0.3);
 Web safe colors:
00 / 33 / 66 / 99 / CC / FF
Total: 216 colors;
5
HSL цветове 6
HSL калкулатор 7
HSL Стойности
 Ηue (Отенък) : е градус от колелото на цветовете,
от 0 до 360, 0 за червено, 120 зелено и 240 синьо.
 Saturation (наситеност) : Започва от 0 и стига до
100%. 0% е нюанс на сиво и 100% е пълният цвят.
 Lightness (светлина) : Процентна стойност, 0 за
черно,100% за бяло.
 Примерни цветове :
hsl(120, 100%, 50%); /* green */
hsl(120, 100%, 75%); /* light green */ hsl(120,
100%, 25%); /* dark green */ hsl(120, 60%,
70%); /* pastel green */
8
Благодаря Ви за
вниманието.
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4) html & css colors

  • 3. Цветове в CSS Най – често използваните начини за дефиниране на цветове в CSS, биват :  Валидно име за цвят на английски език, примерно “red” за червено, “blue” за синьо и тнт.  Стойността в RGB (red, green, blue), примерно “rgb(255, 0, 0);” за червено.  Шестнадесетичната стойност на цвета (HEX), като #FF0000 за червено, #0000FF за синьо и тнт. 3
  • 4. Цветове в CSS Още начини за дефиниране на цветове.  RGBA, RGB стойност с прозрачност, примерно “rgba(255, 0, 0, 0.5)”, за 50% прозрачност.  HSL(Hue (Отенък), Saturation (наситеност), Lightness (светлина)), примерно “hsl(0, 100, 50)” за наситено червено.  HSLA, по същия принцип като rgba, hsl модела с ниво на прозрачност, примерно “hslа(0, 100, 50, 0.5 )”, за 50% прозрачност. 4
  • 5. Стойности на RGB  Red : 0 – 255 / 00 – FF;  Green: 0 – 255/ 00 - FF;  Blue: 0 – 255 / 00 – FF;  Total: 256*256*256 = 16777216 colors;  Opacity : 0 – 1; rgba(255, 0, 0, 0.3);  Web safe colors: 00 / 33 / 66 / 99 / CC / FF Total: 216 colors; 5
  • 8. HSL Стойности  Ηue (Отенък) : е градус от колелото на цветовете, от 0 до 360, 0 за червено, 120 зелено и 240 синьо.  Saturation (наситеност) : Започва от 0 и стига до 100%. 0% е нюанс на сиво и 100% е пълният цвят.  Lightness (светлина) : Процентна стойност, 0 за черно,100% за бяло.  Примерни цветове : hsl(120, 100%, 50%); /* green */ hsl(120, 100%, 75%); /* light green */ hsl(120, 100%, 25%); /* dark green */ hsl(120, 60%, 70%); /* pastel green */ 8

Editor's Notes

  1. Link to the calculator : http://www.w3schools.com/colors/colors_hsl.asp