In all other applications, like Photoshop, Illustrator, Paint, etc. the RGB values range from 0-255



But in Houdini, they range from 0 to 1.

How to do colour matching in Houdini for colours being used in other apps? Is there a way the colour SOP allows values from 0-255 and reinterprets them from 0 to 1 equivalent?

If you click on the parameter to open the colour editor, you can copy/paste a hex color code like CCABDF

or you can create a new spare vector parameter, name it `pscolor`, set it to range 0-255 and then apply the following expression to the color parameter:

that remaps the 0-255 values from your input into the 0-1 range used by Houdini


check the example file

proceduralist
How to do colour matching in Houdini for colours being used in other apps? Is there a way the colour SOP allows values from 0-255 and reinterprets them from 0 to 1 equivalent?

The colors won't match anyway. Those values are for 8bit video space color, the values in Houdini and other CG apps are floating point linear color.

Andr
or you can create a new spare vector parameter, name it `pscolor`, set it to range 0-255 and then apply the following expression to the color parameter:

fit(ch("pscolorx"), 0, 255, 0, 1)

that remaps the 0-255 values from your input into the 0-1 range used by Houdini


check the example file

Andr
If you click on the parameter to open the colour editor, you can copy/paste a hex color code like CCABDF

That seems to work! The hex values of the RGB values generated by your file are matching exactly! Thanks a ton!

jsmack

proceduralist
How to do colour matching in Houdini for colours being used in other apps? Is there a way the colour SOP allows values from 0-255 and reinterprets them from 0 to 1 equivalent?

The colors won't match anyway. Those values are for 8bit video space color, the values in Houdini and other CG apps are floating point linear color.

They are matching indeed. Check the file.