Using String in RGBA format as Color Value

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Posted on by IPC_ahaas

1,387 Moderator

I have a Collection of color values in "RGBA(####,####,####,#.#)" format. When I use this as a color value:

LookUp('App Style Guide',Name = "App Bar Fill").RGBA

which outputs:

RGBA(0,0,0,1)

But when I use that as the color value for something I get "Expected Color Value". My workaround is to put the "RGBA" text on the outside and then pull in the values for the numbers individually:

RGBA(
 LookUp('App Style Guide',Name = "App Bar Fill").R,
 LookUp('App Style Guide',Name = "App Bar Fill").G,
 LookUp('App Style Guide',Name = "App Bar Fill").B,
 LookUp('App Style Guide',Name = "App Bar Fill").A
)

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Building Power Apps

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MichaelFP 1,847 Super User 2025 Season 2 on at

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Why you store as hexadecimal value and using ColorValue("#FFFFF") to set the color?

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IPC_ahaas 1,387 Moderator on at

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Unfortunately converting or storing the values as HEX seems to be the only solution. My resulting code looks like this:

ColorValue(LookUp('App Style Guide', Name = "App Bar Fill").'Color HEX')

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CarlosFigueira on at

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If you have the color in the RGBA(<number>, <number>, <number>, <number>) format, you can use an expression like the one below to extract the components and create the color:

With( Match( LookUp('App Style Guide',Name = "App Bar Fill").RGBA, "RGBA\(\s*(?<r>\d+)\s*,\s*(?<g>\d+)\s*,\s*(?<b>\d+)\s*,\s*(?<a>[\d\.]+)\s*\)"), RGBA(Value(r),Value(g),Value(b),Value(a)) )

If you already have the components in your 'App Style Guide' table, you can use a With call to make the expression a little simpler:

With( { fillColor: LookUp('App Style Guide',Name = "App Bar Fill") }, RGBA(fillColor.R, fillColor.G, fillColor.B, fillColor.A) )

Hope this helps!

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