How To understand
invisible ink ?
IF your computer displays the black text on a black background it will act like invisible ink .
So when you highlighted and email or webpage it forces a color change by adding or subtracting a value to the color
Now highlight the blue box above
The math is a bit tricky because of
the hexadecimal values range (base 16) from
0 through 9 , A, B, C, D, E, F (A=10, B=11, C=12, D=13, E=14, F=15)
or 16 levels (or values) stored in 6 places
Why? Hexadecimal is more efficiently
understood by computers.
Values could be like
To convert a number from base 16 to
base 10, you read it like this:
43 in base 16 = 4 X 161 + 3 X 160 = 64 + 3 = 67 in base 10.
Do the steps in this order
raise the base to the power
multiply the result by the place value
add the result for each place
Remember that letters just stand for numbers between 10 and 15.
222222 = real number value (Base
10) of 2,236,962
66FFCC = real number value of 6,750,156
999999 = real number value of 10,066,329
FFFFFF = real number value of 16,777,215
Want to convert some numbers the easy way
So if the value of the Text is 66FFCC and the Background is 66FFCC you do
not see only one color Now you found out more than you wanted to about Color
on Text & backgrounds in email, internet pages
If you want to play a little (on a good computer) click on http://www.noel-1.com/color_test.htm and just move your mouse (do not click) over
the numbers like above.
What basic color is 66FFCC? You should be able to tell with the above color chart
The combination of Red, Green and Blue values from 0 to 255 gives a total of more than 16 million different colors to play with (256 x 256 x 256).
Most modern monitors are capable of displaying at least 16384 different colors.
If you look at the color table below, you will see the result of varying the red light from 0 to 255, while keeping the green and blue light at zero.
Have had enough? if Not
Last update was at 04/07/2008 02:43:16 PM
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