Hi all Is there a out of the box way to obtain the Hex value

Question

Hi all Is there a out of the box way to obtain the Hex value as aaxxyyzz from a given `Color`

Kirill Grouchnikov · Answer

`Color toArgb` will give you an encoded integer and then you can do ` 08X format argbInt ` on it

Kirill Grouchnikov · Answer

Note that `String format` is not in common but rather only available for jvm at the moment <https kotlinlang org api latest jvm stdlib kotlin text format html>

ephemient · Answer

in this case you could do something like ``` + argbInt toUInt toString radix = 16 padStart 8 0 ``` in common although ideally we d have a common function for this <https youtrack jetbrains com issue KT 50309|https youtrack jetbrains com issue KT 50309>

alorma · Answer

hey the first optioon worked perfect1

alorma · Answer

Just is ther a way to obtain it withut alpha

Colton Idle · Answer

heres some code iw rote to do this ```val textColor = Integer toHexString colorValue toArgb padStart 8 0 toUpperCase Locale ROOT removeRange 0 2 val transparencyValue = if shouldShowTransparencyValue Integer toHexString colorValue toArgb padStart 8 0 toUpperCase Locale ROOT take 2 getTransparencyValue else ```

Colton Idle · Answer

``` Helper to get a human readable alpha percentage from a 2 char hex code private fun String getTransparencyValue String return this toInt 16 255F 100 roundToInt toString + ```

ephemient · Answer

Integer is JVM only if you need common you can do something like ```argbInt and 0xffffff toString radix = 16 padStart 6 0 ``` to mask off the alpha

Albert Chang · Answer

I think you can just use ` 06X format color toArgb and 0xFFFFFF `

Colton Idle · Answer

< alorma> let me know what you end up using This code in my codebase looks super hacky and so if you write some ext function that you wanna share here that works for me smile

alorma · Answer

I ve end up using < Albert Chang> version but feeling like

Colton Idle · Answer

< alorma> you should file a bug FR for provide an extension from color to string hex value I d star it Worth a shot sweat smile

ephemient · Answer

the ` format ` functions are all JVM only I was providing non JVM variants since that was brought up by Kirill

ephemient · Answer

I agree that regardless of non JVM specific formatting colors should have both parsing and stringification in Compose

Kirill Grouchnikov · Answer

It gets tricky Or maybe not tricky but there s an implicit assumption in here that sRGB color space is the one and only way to represent a color So yes it is a rather traditional default way of specifying color but it s just one of more than a dozen color spaces supported by Compose

ephemient · Answer

that s fair but Color Int and Color toArgb are sRGB so it is special