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Visitor

## How to convert rgba to hex?

I have a color in rgba format coming from the server, but I don't think roku can understand rgba, so was wondering if there was a convenient api to convert rgba to hex?
Example:
(255, 255 , 255, 255) - > 0xFFFFFFFF

Thanks
4 REPLIES 4
Roku Guru

## Re: How to convert rgba to hex?

Dunno if there is one, but should be pretty easy to code one up I would think.
Visitor

## Re: How to convert rgba to hex?

Yea, I just wrote a function for it

`// Example: If you input 255, 255, 255, 255 as the argument it will return "0xFFFFFFFF"function rgbaToHex(r as integer, g as integer, b as integer, a as integer)    hexArray = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"]    hexColor = "0x"        for i = 0 to 3        colorChannel = invalid                if(i = 0) then            colorChannel = r                    else if(i = 1) then            colorChannel = g                    else if(i=2) then              colorChannel = b                    else if(i=3) then            colorChannel = a        end if            sixteens = int(colorChannel / 16)  // How many 16's can go into colorChannel (since hex is base 16)?        ones = colorChannel mod 16         // How many 1's are in the remainder?                hexColor += hexArray[sixteens] + hexArray[ones]    end for    return hexColorend function`
Visitor

## Re: How to convert rgba to hex?

Hi,
you can improve your solution by using StrI(value as Integer, radix as Integer) as String
example: StrI(255, 16) '= "ff"
Roku Guru

## Re: How to convert rgba to hex?

You can use a bitshift

`function rgbToColor(r, g, b, a,LE=false)         if LE=true'(LITTLE_ENDIAN)            return ( (a << 24) + (b << 16) + (g <<  😎 + r )         else            return ( (r << 24) + (g << 16) + (b <<  😎 + a )        end if     end function `
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