Math HTML color codes information
[ last modified: 2007-05-26 ]
Links to important references relating to this entry appear below.
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Before I begin showing my conclusions, I thank the following:
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MS Explorer, AOL Journals, Colorado State Engineering,
Keller . com, and Learning Web Design . com -
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In the RGB (red/green/blue) HTML color realm, the number
"17" (as I have long known through my own heuristic math
delvings, but which I did not fully appreciate until today via
learning about the uses for the number "16" from the Colorado
State Engineering site) is key. The #FFFFFF I placed above
is the hexadecimal (HEX) code for the color "white" (the top
cock, as in the adult male domestic chicken) which has the
equivalent RGB code of 255,255,255. There are sixteen (16)
basic color gradations, if black (#000000) is allowed. They are
"F" / "E" / "D" / "C" / "B" / "A" / "9" / "8" / "7" / "6" / "5" / "4" /
"3" / "2" / "1" / "0" - This means that A = 10, B = 11, C = 12,
D = 13, E = 14, and F = 15. However, "0" is in termpostion
(tpo) "1", and therefore "F" is in tpo "16". This is significant
when dealing with color combinations. "17" is this system's
rung number. 0/17 = 0. 0 + 17 = 17 and 17/17 = 1, and 1 =
#111111 in HEX and 017,017,017 in RGB. Black is black
and white is white, but every color between these in which the
six HEX alpha/numeric characters are alike are variants of gray.
So 000 (0), 017 (17), 034 (34), 051 (51), 068 (68), 085 (85),
102, 119, 136, 153, 170, 197, 204, 221, 236, and 255 are the
central sixteen RGB numbers. 16 x 16 = 256. From this set
far more colors than are needed can be generated. One color
in the w3c core sixteen is silver (#C0C0C0 or 192,192,192).
What is "C" in HEX is "204" in RGB. If 204 is divided by 17,
12 remains. It happens that 204 - 12 = 192, and C is 12 as
17 shows. [ It is 12:55 PM and I am taking a break. ]
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The other w3c colorsare: white, black, one gray (#808080 or
128,128.128), red(#FF0000 or 255,0,0), yellow (#FFFF00
or 255,255,0), blue (#0000FF or 0,0,255), aqua (#00FFFF
or 0,255,255), lime(#00FF00 or 0,255,0), fuchsia (#FF00FF
or 255,0,255, navy (#000080 or 0,0,128), maroon (#800000
or 128,0,0), teal (#008080 or 0,128,128), olive (#808000 or
128,128,0), green (#008000 or 0,128,0), & purple (#800080
or 128,0,128). There are nastinesses herein whose sources I
am not aware of and whose consequent results I am not able
to dispute, but I am bringing them to the fore. I have been an
AOL member since April 18, 2000; and almost from the first I
was puzzled by the color system, especially by the color now
(and possibly then) known as either cyan or aqua. Still, green
then was what lime now is, and I'm fairly sure purple then was
what fuchsia now is. In light of the aqua/cyan color, these new
namings seem apt, and I do find no fault with fuchsia, purple,
or lime; but the color which is labeled green is going to take
some getting used to. What is at stake, if it is at stake, is
the prism-derived notion of what a primary, secondary, and
so on color is.
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On to "16" and what I culled from the engineering site. This
involves remainders resulting from divisions by "16" and--as
with "17"--"0" is included. In this regard, MS Explorer will
sometimes change the RGB code I have put in. Reminder:
16 divides into 256 (not 255) 16 times. Because divisions
by 16 extend to four places, .0000 must be used for black.
1/16 = .0625, 2/16 = .1250, 3/16 = .1875, 4/16 = .2500,
5/16 = .3125, 6/16 = .3750, 7/16 = .4375, 8/16 = .5000,
9/16 = .5625, 10/16 = .6250, 11/16 = .6875, 12/16 = .7500,
13/16 = .8125, 14/16 = .8750, and 15/16 = .9375 and F = 15
and 15 x 17 = 255. Why is knowing this valuable? Here is
the link to
Engineering Colorado State HTML color support
Read it only/ as its reason for being is to aid the students there.
On this page is an explanation of how to convert an RGB
value to its hexadecimal equivalent.
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The catalyst behind this entry was and yet is my desire to know
color names for the 216 HTML safe colors. My immediate ? is:
What is the name of the #00CCCC HEX color?
[ 7:17 PM - I've decided to make up my own color names. ]
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[ 21MAY07: There will be more to come here. ]
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One pleasant light event was that finally I did find what I'd long
been vigorously seeking, but I have chosen not to use it; yet,
since the information there is worth pondering:
*** this e-whip to it ***.
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Also this from the University of
Rhode Island.
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two other worthwhile sites to visit:
color names at Learning Web Design
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RGB HTML at Keller
[ 22MAY07: Have been thinking about "green" and/ after concluding
that midway between 255,0,0 and 0,0,255 is 0,128,0// I went to
the Internet Options color area. I chose to test my conclusion via
the 204,204,204 bg color I am using. It changed the bg color but
because I did not OK the initial OK it moved to the basic colors
palette IE7 uses. Suddenly (though it now seems I should have
known this) I realized/ the colors palette at AOL Journals is the same
one, but AOL Journals does not use strict RGB codes. It uses the
associated codes w3c uses. As I now know which of the palette's
colors is 0,128,0/ I am next going to see how it is coded in AOL J.
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It is, of course (as I half-suspected): 008000. Besides, all this is
already noted above where I presented the core w3c 16 colors
along with both codes. ]
[ 26MAY07: This morning I found a site where the names given
to certain RGB (rgb) colors are more to my liking.
scroll down
to see
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Also this morning (with Google's help) I re-learned that with
paints and dyes the primary colors are red,blue,yellow. Try
a "primary colors rgb" search. ]
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to go to my colors.hex.rgb.2 entry
~
Brian A. J. Salchert
