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光与色



色彩的形成

    色的感觉有色调、亮度、色彩度(饱和度)三种性质,正常人色觉光谱的范围由400nm紫色到约760nm的红色,其间大约可以区别出16个色相。人眼视网膜锥体感光细胞内有三种不同的感光色素,它们分别对570nm的红光、445nm的蓝光和535nm的绿光吸收率最高,红、绿、蓝三种光混合比例不同,就可形成不同的颜色,从而产生各种色觉。

    颜色视觉正常的人在光亮条件下能看可见光谱的各种颜色,它们从长波一端向短波一端的顺序是:红色(700nm),橙色(620nm),黄色(580nm),绿色(510nm),蓝色(470nm),紫色(420nm)。此外,人眼还能在上述两个相邻颜色范围的过渡区域看到各种中间颜色。我们常常把这些中间颜色叫做绿黄、蓝绿色等等。此外,还有一些我们难以叫出名字的颜色。  

颜色  波长(nm) 范围(nm) 
700 640—750
620 600—640
580 550—600 
绿 510 480—550
470 450—480
420 400—450


   在可见光390nm-760nm之间,我们引入一个表示光的发光颜色的物理概念--色温.光源的色温是以光源发光时所显现的颜色与一个绝对黑体被高温燃烧时所显现的颜色相一致时的燃烧温度来定义的,它的单位是绝对温度Kelvin『K』.K值越高,光所显现的颜色就愈趋向于白蓝色,即愈趋向于390nm;K值越低,光所显现的颜色就愈趋向于黄红色,即愈趋向于760nm.见图所示.


颜色参考

   颜色有两种表示方式。一种是用颜色名称表示,比如blue表示蓝色。另外一种是用16进制的数值表示RGB的颜色值。RGBRedGreenBlue意思,RGB每个原色的最小值是0,最大值是255,如果换算成16进制表示,就是(#00)(#FF)。比如白色的RGB(255,255,255),就用#FFFFFF表示;还有黑色的RGB(0,0,0),就用#000000表示。
   只有16种颜色可以用颜色名称表示(aqua, black, blue, fuchsia, gray, green, lime, maroon, navy, olive, purple, red, silver, teal, white, and yellow),其它都要用16进制RGB颜色值表示。

#000000 #000033 #000066 #000099 #0000CC #0000FF
#003300 #003333 #003366 #003399 #0033CC #0033FF
#006600 #006633 #006666 #006699 #0066CC #0066FF
#009900 #009933 #009966 #009999 #0099CC #0099FF
#00CC00 #00CC33 #00CC66 #00CC99 #00CCCC #00CCFF
#00FF00 #00FF33 #00FF66 #00FF99 #00FFCC #00FFFF
#330000 #330033 #330066 #330099 #3300CC #3300FF
#333300 #333333 #333366 #333399 #3333CC #3333FF
#336600 #336633 #336666 #336699 #3366CC #3366FF
#339900 #339933 #339966 #339999 #3399CC #3399FF
#33CC00 #33CC33 #33CC66 #33CC99 #33CCCC #33CCFF
#33FF00 #33FF33 #33FF66 #33FF99 #33FFCC #33FFFF
#660000 #660033 #660066 #660099 #6600CC #6600FF
#663300 #663333 #663366 #663399 #6633CC #6633FF
#666600 #666633 #666666 #666699 #6666CC #6666FF
#669900 #669933 #669966 #669999 #6699CC #6699FF
#66CC00 #66CC33 #66CC66 #66CC99 #66CCCC #66CCFF
#66FF00 #66FF33 #66FF66 #66FF99 #66FFCC #66FFFF
#990000 #990033 #990066 #990099 #9900CC #9900FF
#993300 #993333 #993366 #993399 #9933CC #9933FF
#996600 #996633 #996666 #996699 #9966CC #9966FF
#999900 #999933 #999966 #999999 #9999CC #9999FF
#99CC00 #99CC33 #99CC66 #99CC99 #99CCCC #99CCFF
#99FF00 #99FF33 #99FF66 #99FF99 #99FFCC #99FFFF
#CC0000 #CC0033 #CC0066 #CC0099 #CC00CC #CC00FF
#CC3300 #CC3333 #CC3366 #CC3399 #CC33CC #CC33FF
#CC6600 #CC6633 #CC6666 #CC6699 #CC66CC #CC66FF
#CC9900 #CC9933 #CC9966 #CC9999 #CC99CC #CC99FF
#CCCC00 #CCCC33 #CCCC66 #CCCC99 #CCCCCC #CCCCFF
#CCFF00 #CCFF33 #CCFF66 #CCFF99 #CCFFCC #CCFFFF
#FF0000 #FF0033 #FF0066 #FF0099 #FF00CC #FF00FF
#FF3300 #FF3333 #FF3366 #FF3399 #FF33CC #FF33FF
#FF6600 #FF6633 #FF6666 #FF6699 #FF66CC #FF66FF
#FF9900 #FF9933 #FF9966 #FF9999 #FF99CC #FF99FF
#FFCC00 #FFCC33 #FFCC66 #FFCC99 #FFCCCC #FFCCFF
#FFFF00 #FFFF33 #FFFF66 #FFFF99 #FFFFCC #FFFFFF
颜色名称

aliceblue
(#F0F8FF)

antiquewhite
(#FAEBD7)

aqua
(#00FFFF)

aquamarine
(#7FFFD4)

azure
(#F0FFFF)

beige
(#F5F5DC)

bisque
(#FFE4C4)

black
(#000000)

blanchedalmond
(#FFEBCD)

blue
(#0000FF)

blueviolet
(#8A2BE2)

brown
(#A52A2A)

burlywood
(#DEB887)

cadetblue
(#5F9EA0)

chartreuse
(#7FFF00)

chocolate
(#D2691E)

coral
(#FF7F50)

cornflowerblue
(#6495ED)

cornsilk
(#FFF8DC)

crimson
(#DC143C)

cyan
(#00FFFF)

darkblue
(#00008B)

darkcyan
(#008B8B)

darkgoldenrod
(#B8860B)

darkgray
(#A9A9A9)

darkgreen
(#006400)

darkkhaki
(#BDB76B)

darkmagenta
(#8B008B)

darkolivegreen
(#556B2F)

darkorange
(#FF8C00)

darkorchid
(#9932CC)

darkred
(#8B0000)

darksalmon
(#E9967A)

darkseagreen
(#8FBC8B)

darkslateblue
(#483D8B)

darkslategray
(#2F4F4F)

darkturquoise
(#00CED1)

darkviolet
(#9400D3)

deeppink
(#FF1493)

deepskyblue
(#00BFFF)

dimgray
(#696969)

dodgerblue
(#1E90FF)

firebrick
(#B22222)

floralwhite
(#FFFAF0)

forestgreen
(#228B22)

fuchsia
(#FF00FF)

gainsboro
(#DCDCDC)

ghostwhite
(#F8F8FF)

gold
(#FFD700)

goldenrod
(#DAA520)

gray
(#808080)

green
(#008000)

greenyellow
(#ADFF2F)

honeydew
(#F0FFF0)

hotpink
(#FF69B4)

indianred
(#CD5C5C)

indigo
(#4B0082)

ivory
(#FFFFF0)

khaki
(#F0E68C)

lavender
(#E6E6FA)

lavenderblush
(#FFF0F5)

lawngreen
(#7CFC00)

lemonchiffon
(#FFFACD)

lightblue
(#ADD8E6)

lightcoral
(#F08080)

lightcyan
(#E0FFFF)

lightgoldenrodyellow
(#FAFAD2)

lightgreen
(#90EE90)

lightgrey
(#D3D3D3)

lightpink
(#FFB6C1)

lightsalmon
(#FFA07A)

lightseagreen
(#20B2AA)

lightskyblue
(#87CEFA)

lightslategray
(#778899)

lightsteelblue
(#B0C4DE)

lightyellow
(#FFFFE0)

lime
(#00FF00)

limegreen
(#32CD32)

linen
(#FAF0E6)

magenta
(#FF00FF)

maroon
(#800000)

mediumaquamarine
(#66CDAA)

mediumblue
(#0000CD)

mediumorchid
(#BA55D3)

mediumpurple
(#9370DB)

mediumseagreen
(#3CB371)

mediumslateblue
(#7B68EE)

mediumspringgreen
(#00FA9A)

mediumturquoise
(#48D1CC)

mediumvioletred
(#C71585)

midnightblue
(#191970)

mintcream
(#F5FFFA)

mistyrose
(#FFE4E1)

moccasin
(#FFE4B5)

navajowhite
(#FFDEAD)

navy
(#000080)

oldlace
(#FDF5E6)

olive
(#808000)

olivedrab
(#6B8E23)

orange
(#FFA500)

orangered
(#FF4500)

orchid
(#DA70D6)

palegoldenrod
(#EEE8AA)

palegreen
(#98FB98)

paleturquoise
(#AFEEEE)

palevioletred
(#DB7093)

papayawhip
(#FFEFD5)

peachpuff
(#FFDAB9)

peru
(#CD853F)

pink
(#FFC0CB)

plum
(#DDA0DD)

powderblue
(#B0E0E6)

purple
(#800080)

red
(#FF0000)

rosybrown
(#BC8F8F)

royalblue
(#4169E1)

saddlebrown
(#8B4513)

salmon
(#FA8072)

sandybrown
(#F4A460)

seagreen
(#2E8B57)

seashell
(#FFF5EE)

sienna
(#A0522D)

silver
(#C0C0C0)

skyblue
(#87CEEB)

slateblue
(#6A5ACD)

slategray
(#708090)

snow
(#FFFAFA)

springgreen
(#00FF7F)

steelblue
(#4682B4)

tan
(#D2B48C)

teal
(#008080)

thistle
(#D8BFD8)

tomato
(#FF6347)

turquoise
(#40E0D0)

violet
(#EE82EE)

wheat
(#F5DEB3)

white
(#FFFFFF)

whitesmoke
(#F5F5F5)

yellow
(#FFFF00)

yellowgreen
(#9ACD32)


成套专用显示系统供应:

       
       


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