Double Hexagon, HTML Hexadecimal Color Palette continued...
Hexadecimal notation or base 16, uses the standard base 10 digits; 0 through 9 as well as using the letters A through F
as digits too. Think of this as being born with 16 fingers instead of 10 and having a need to give each finger it's own symbol.
The advantage of hex numbers is that with combinations of 2 digits, 256 numbers can be created in hexadecimal notation
(00 to FF), compared to only 100 numbers in base 10 (00 to 99). Thus, a complete hexagon palette wheel would consist of over sixteen
million combinations, 256^{3} = 16,777,216. Creating a palette of this size, with html, would not only be a daunting task, it would also also be
difficult to fit on a single web page. And at this scale, many of the hues would not be distinguishable to the eye from the hue next to it.
The wheel palette can aid computer artists in creating colors to their liking by adding or subtracting hex values between hues.
By saving this web page to your pc, copies of the hexagon palette can be easily modified.
Key colors converted to grayscale 
FF0000 
FFFF00 
00FF00 
00FFFF 
0000FF 
FF00FF 
4C4C4C 
E6E6E6 
999999 
B3B3B3 
191919 
666666 

Key colors converted to grayscale, arranged from dark to light 
0000FF 
FF0000 
FF00FF 
00FF00 
00FFFF 
FFFF00 
191919 
4C4C4C 
666666 
999999 
B3B3B3 
E6E6E6 

Grayscale hex triplets, black to white 
000000 
333333 
666666 
999999 
CCCCCC 
FFFFFF 

While the hexagon chart's colors are equidistant hex values, certain color sequences appear to show a
greater change or jump from some hues to the next hue then others.
The right hexagon, which centers on black, appears to "jump hues" at greater intervals than the left hexagon. Although this is partly due to the big "33" jumps in values, this is most apparent
with the midspectrum colors; green and yellow, the eye can easily distinguish these hue variations which are in the middle of the
visible color spectrum ranging from red to violet.
Big jumps also appear to occur in the left hexagon around the key colors; yellow, cyan and violet. These "bright colors" have four F's
and two 0's in their hex codes and so are closer to white than the surrounding hues. Conversely, the key colors red, blue and green,
have two F's and four 0's; closer to black than white, and show less apparent transitions. However, colors that are easier for the eye to see look brighter. For comparison, when all the key colors are converted to a gray scale, twoF green is still brighter than fourF violet.



