I am working with a piece of code that requires me to use 8 digit hex rgba values
-b [ --background-color ] arg (=efefefff) color of background in hex rgba
-f [ --foreground-color ] arg (=00000000) color of background in hex rgba
I cant for the life of me figure out what the 8 digit combination for black is
00000000
is completely transparent not black
can some help?
Black has no red, green or blue, but it is not transparent, so the alpha needs to be ff. Therefore the combination you seek is
000000ff
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CSS hexadecimal RGBA?
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How to apply opacity in Hex colors ?
I am working with CSS Hex colors. I am trying to apply opacity in Hex colors. I need #78909c with opacity 0.2.
The hex representation of colors supports the alpha channel to set opacity.
so, take any color in hex e.g. #ffffff and append 00 to ff (in hexadecimal representation) for opacity, i.e. #ffffff00 - #ffffffff
for your color: #78909c33
20% implies 33 in hex
Here is a demo
Reference: Hexadecimal notation
HEXA - #RRGGBBAA
There's a relatively new way of doing transparency, it's called HEXA (HEX + Alpha). It takes in 8 digits instead of 6. The last pair is Alpha. So the pattern of pairs is #RRGGBBAA. Having 4 digits also works: #RGBA
I am not sure about its browser support for now but, you can check the DRAFT Docs for more information.
§ 4.2. The RGB hexadecimal notations: #RRGGBB The syntax of a
is a token whose value consists of 3, 4, 6,
or 8 hexadecimal digits. In other words, a hex color is written as a
hash character, "#", followed by some number of digits 0-9 or letters
a-f (the case of the letters doesn’t matter - #00ff00 is identical to
#00FF00).
8 digits The first 6 digits are interpreted identically to the 6-digit
notation. The last pair of digits, interpreted as a hexadecimal
number, specifies the alpha channel of the color, where 00 represents
a fully transparent color and ff represent a fully opaque color.
Example 3 In other words, #0000ffcc represents the same color as
rgba(0, 0, 100%, 80%) (a slightly-transparent blue).
4 digits This is a shorter variant of the 8-digit notation, "expanded"
in the same way as the 3-digit notation is. The first digit,
interpreted as a hexadecimal number, specifies the red channel of the
color, where 0 represents the minimum value and f represents the
maximum. The next three digits represent the green, blue, and alpha
channels, respectively.
For the most part, Chrome and Firefox have started supporting this: enter image description here
I have this code for a color,0x7FBB00FF I don't know how are called this colors with 0x and where I can found a convert for photoshop ?
It's RGBA: hexadecimal with an alpha value at the end - FF.
Type the relevant bit of the color code into Google to see it as a hex color (#7FBB00): https://www.google.com/search?q=%237FBB00
Hexadecimal.
For #0x = See that post
7F = Red
BB = Green
00 = Blue
FF = Alpha
That comes from google:
It could be a Android color
or Q-Image Format
How to easy convert per Hand
The 0x prefix usually means hexadecimal.
And each color channel usually uses 1 byte, that is, it ranges between 00 and FF. That's 2 digits in hexadecimal.
The convention order is red (R), green (G), blue (B).
Sometimes an alpha (A) component with the transparency is also added.
So your color is probably in RRGGBBAA.
Red: 127
Green: 187
Blue: 0
Alpha: 255
In CSS, you would use
rgba(127, 187, 0, 255)
Or, since FF usually means fully opaque, you don't need the alpha channel.
rgb(127, 187, 0)
#7FBB00
But sometimes the transparency goes to the beginning like AARRGGBB, so you color coulor also be
Alpha: 127
Red: 187
Green: 0
Blue: 255
Tried to replace all colors except yellow (with some -fuzz) to transparent without result. Didn't find anything in documentation maybe someone can help me.
Thank you.
As I know in ImageMagic there is +opaque, but I can't use this library
This should do what you want. It makes the yellow pixels transparent and then inverts the alpha channel.
gm convert input.png +matte -matte -fuzz 5% -transparent yellow -operator matte negate 1 output.png
The "+matte" removes any existing transparency that might be in the input.png, then "-matte" adds an opaque alpha channel.
Tested with GraphicsMagick-1.3.20.
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Closed 10 years ago.
Possible Duplicate:
3 digit Hex color code
Using 3-digit color codes rather than 6-digit color codes in CSS
I have a color that has the following RGB values:
255-223-145
I see that lots of pages have the colors with just three digits, for example:
color: #999;
I wonder why, and how would I convert these rgb values to a three digit color.
Thanks
It isn't a three digit colour, #999 is merely shorthand for #999999 so unless your numbers repeat like #223322 (#232) you can't cut it down.
The question has two bits, to convert hex to rgb, use a tool like this or this online.
#999 is shorthand for #999999, and #ABC is short for #AABBCC. CSS colors can be shortened if you don't need the full six hex digits.
Your color in hex is #FFDF91. The closest three-digit color would be #FD8 (#FFDD88). Close, though not identical.
You can write shortly if you have 2 same digits
FF -> F
99 -> 9
So #999 = #999999 and #FFF = #FFFFFF
I'm aware that the method to convert a 3 digit hex css color to 6 digit code is by duplicating each hex digit once, as below.
#ABC === #AABBCC
Why does it work this way? Why isn't #ABC equivalent to #A0B0C0?
From the W3C spec:
The three-digit RGB notation (#rgb) is converted into six-digit form (#rrggbb) by replicating digits, not by adding zeros. For example, #fb0 expands to #ffbb00. This ensures that white (#ffffff) can be specified with the short notation (#fff) and removes any dependencies on the color depth of the display.
You can read more about it here: http://www.w3.org/TR/css3-color/
The reason is to be able to code the full range of colors (able to do both the highest and lowest color). For example, if #RGB became #R0G0B0, then #fff would become #f0f0f0, meaning you cannot code white. Conversely, if #RGB became #RfGfBf, then #000 would be #0f0f0f, ruling out black. The system of #RGB = #RRGGBB allows for #000 = #000000 (black) and #fff = #ffffff (white), giving a full range of evenly-spaced colors.
Read more at:
Wikipedia article
W3 Website