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#1
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Colors
Hello
I am aware that the following may not be exactly an Excel question, but none the less I hope someone will explain. Why is it that in Excel's Colors dialog box (Custom) one can mix red, green and blue and not the primary colors red, blue and yellow?. Guess I should know, but I don't. Hans Knudsen |
#2
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Colors
I believe the answer is related to the way a monitor produces color on the pixel level. The primary colors for each pixel are Red, Blue, and Green, (known as RBG). Primary colors generally relate to the way offset presses work using the 3 primary colors overlaping each other, plus one extra color.
Regards... "Hans Knudsen" wrote: Hello I am aware that the following may not be exactly an Excel question, but none the less I hope someone will explain. Why is it that in Excel's Colors dialog box (Custom) one can mix red, green and blue and not the primary colors red, blue and yellow?. Guess I should know, but I don't. Hans Knudsen |
#3
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Colors
"Hans Knudsen" wrote...
I am aware that the following may not be exactly an Excel question, but none the less I hope someone will explain. Why is it that in Excel's Colors dialog box (Custom) one can mix red, green and blue and not the primary colors red, blue and yellow?. Guess I should know, but I don't. Primary colors are artistic concepts, and they generally apply to pigments, which reflect light. Light sources, on the other hand, are more the domain of physics, and RGB are the basic colors. With pigments, mix red, blue and yellow and you get brown. With light sources, mix red, green and blue and you get white. Your monitor is a light source, so it uses the physics rather than artistic convention. -- To top-post is human, to bottom-post and snip is sublime. |
#4
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Colors
Hi,
If you are interested in mixing colors, try my Color Systems Managemnet Utility at: http://au.geocities.com/windsofmark It's not excel but you can move the scrollers of R,G,B to find a new color. It also shows html and decimal factors. A picture on the site shows what it looks like. There are others there too. regards Mark E. Philpot -----Original Message----- Hello I am aware that the following may not be exactly an Excel question, but none the less I hope someone will explain. Why is it that in Excel's Colors dialog box (Custom) one can mix red, green and blue and not the primary colors red, blue and yellow?. Guess I should know, but I don't. Hans Knudsen . |
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