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➜ MUSHclient
➜ Lua
➜ Converting Colours to HEX
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Converting Colours to HEX
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| Posted by
| Rene
(46 posts) Bio
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| Date
| Mon 01 Oct 2018 10:50 PM (UTC) |
| Message
| I am looking for a good way to convert a colour from it's name to the hex value, i.e. convert "red" to "#FF0000", etc.
Thanks! | | Top |
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| Posted by
| Fiendish
USA (2,533 posts) Bio
Global Moderator |
| Date
| Reply #1 on Tue 02 Oct 2018 03:30 AM (UTC) Amended on Tue 02 Oct 2018 11:16 PM (UTC) by Fiendish
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| Message
| modified from http://www.gammon.com.au/forum/?id=1883
function ColourNameToRGBHex(color_name)
color = ColourNameToRGB(color_name)
low = math.floor(color/65536)
color = color - low * 65536
mid = math.floor(color/256) * 256
color = color - mid
high = color * 65536
return string.format("#%06x", high + mid + low)
end
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https://github.com/fiendish/aardwolfclientpackage | | Top |
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| Posted by
| Rene
(46 posts) Bio
|
| Date
| Reply #2 on Tue 02 Oct 2018 06:39 PM (UTC) |
| Message
| Thanks, but it does not seem to be working fully.
For blue it returns #ff, for green #8000
I am looking at it to try understanding it and see if I can figure out the issue. I am unsure what the general number from ColourNameToRGB means, as standard RGB give 3 numbers for the red, green and blue value, yet this returns a single number, so I assume if I understood that it would make things simpler.
Thanks so far. | | Top |
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| Posted by
| Nick Gammon
Australia (23,120 posts) Bio
Forum Administrator |
| Date
| Reply #3 on Tue 02 Oct 2018 08:50 PM (UTC) |
| Message
| Yes, but you asked for one number.
See https://en.wikipedia.org/wiki/Web_colors#HTML_color_names
The standard HTML colour codes are like this:
#rrggbb
Where “rr” is the red component (0 to 0xFF, that is, 0 to 255) and so on.
Full green is actually “lime” and not “green”. Lime would give you #FF00
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- Nick Gammon
www.gammon.com.au, www.mushclient.com | | Top |
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| Posted by
| Fiendish
USA (2,533 posts) Bio
Global Moderator |
| Date
| Reply #4 on Tue 02 Oct 2018 11:17 PM (UTC) |
| Message
| | I've updated it to add zero-padding. |
https://github.com/fiendish/aardwolfclientpackage | | Top |
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